/* 
   Style Sheet for Zunaed Islam's Personal Website
   Theme: Minimal, Modern, elegant - Notion & Linear inspired
   Color Palette:
     - Off-white Background: #F6FAFD
     - Light Accent / Borders: #B3CFE5
     - Medium Steel Blue: #4A7FA7
     - Dark Steel Blue: #1A3D63
     - Deep Navy / Text: #0A1931
*/

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700&display=swap');

:root {
    --bg-primary: #F6FAFD;
    --bg-secondary: #FFFFFF;
    --text-primary: #0A1931;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --border-color: #B3CFE5;
    --accent-light: #E1EFFB;
    --accent-medium: #4A7FA7;
    --accent-dark: #1A3D63;
    --accent-deep: #0A1931;
    --success: #10B981;
    --error: #EF4444;
    
    --font-primary: 'Plus Jakarta Sans', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(10, 25, 49, 0.05), 0 2px 4px -1px rgba(10, 25, 49, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(10, 25, 49, 0.06), 0 4px 6px -2px rgba(10, 25, 49, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(10, 25, 49, 0.08), 0 10px 10px -5px rgba(10, 25, 49, 0.04);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

button {
    font-family: var(--font-primary);
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition-smooth);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-medium);
}

/* Global Layout Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px auto;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--accent-light);
    color: var(--accent-dark);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 9999px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    gap: 8px;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--accent-dark);
    color: var(--bg-secondary);
}

.btn-primary:hover {
    background-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon {
    padding: 10px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-icon:hover {
    background: var(--accent-light);
    color: var(--accent-dark);
    border-color: var(--border-color);
}

/* Sticky Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(246, 250, 253, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(179, 207, 229, 0.3);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 12px 0;
    background-color: rgba(246, 250, 253, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--accent-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-medium);
    border-radius: 50%;
    display: inline-block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-dark);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-medium);
    transition: var(--transition-smooth);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: transparent;
    color: var(--text-primary);
}

/* Hero Section */
.hero-section {
    padding: 160px 0 96px 0;
    background: radial-gradient(circle at 80% 20%, rgba(179, 207, 229, 0.25) 0%, transparent 60%);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-dark);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.hero-badge-pulse {
    width: 6px;
    height: 6px;
    background-color: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-title span {
    background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent-medium) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 580px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-socials {
    display: flex;
    align-items: center;
    gap: 20px;
}

.hero-socials-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.hero-social-link {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.hero-social-link:hover {
    color: var(--accent-medium);
    transform: translateY(-2px);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Beautiful dynamic CSS wave visual replacing placeholders */
.wave-canvas-container {
    width: 380px;
    height: 380px;
    position: relative;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: linear-gradient(135deg, var(--border-color) 0%, var(--accent-medium) 50%, var(--accent-dark) 100%);
    box-shadow: var(--shadow-xl);
    animation: blob-morph 15s ease-in-out infinite alternate;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

@keyframes blob-morph {
    0% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    25% { border-radius: 58% 42% 75% 25% / 55% 45% 55% 45%; }
    50% { border-radius: 50% 50% 33% 67% / 63% 37% 63% 37%; }
    75% { border-radius: 42% 58% 67% 33% / 40% 60% 40% 60%; }
    100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
}

.wave-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.4) 0%, transparent 60%);
}

.profile-avatar-placeholder {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.7);
    box-shadow: var(--shadow-lg);
    z-index: 1;
    object-fit: cover;
}

.floating-card {
    position: absolute;
    padding: 16px 20px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 40px;
    left: -20px;
    animation-delay: 0s;
}

.floating-card.card-2 {
    bottom: 40px;
    right: -20px;
    animation-delay: 3s;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.floating-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-light);
    color: var(--accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.floating-card-text h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.floating-card-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
    align-items: flex-start;
}

.about-left {
    position: sticky;
    top: 100px;
}

.about-bio {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.about-bio strong {
    color: var(--text-primary);
}

.skills-list {
    margin-top: 40px;
}

.skills-title {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.skill-item i {
    color: var(--accent-medium);
}

.about-right {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.channel-cta {
    text-align: center;
    padding: 20px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
}

.channel-cta h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--accent-dark);
}

.channel-cta p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Portfolio Section */
.portfolio-filter-container {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 8px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 9999px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--accent-dark);
    color: var(--bg-secondary);
    border-color: var(--accent-dark);
    box-shadow: var(--shadow-md);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.portfolio-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-medium);
}

.portfolio-img-container {
    position: relative;
    padding-bottom: 60%;
    overflow: hidden;
    background-color: var(--accent-light);
}

.portfolio-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.portfolio-card:hover .portfolio-img {
    transform: scale(1.05);
}

.portfolio-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--accent-dark);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.portfolio-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.portfolio-card-title {
    font-size: 1.35rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.portfolio-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.portfolio-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-dark);
}

.portfolio-card-link i {
    transition: var(--transition-fast);
}

.portfolio-card-link:hover {
    color: var(--accent-medium);
}

.portfolio-card-link:hover i {
    transform: translateX(4px);
}

/* Blog Section */
.blog-categories {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.blog-featured {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 48px;
    transition: var(--transition-smooth);
}

.blog-featured:hover {
    border-color: var(--accent-medium);
    box-shadow: var(--shadow-xl);
}

.blog-featured-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
}

.blog-featured-img-container {
    position: relative;
    padding-bottom: 65%;
    height: 100%;
}

.blog-featured-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-featured-info {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-meta-dot {
    width: 4px;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 50%;
}

.blog-featured-title {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.2;
}

.blog-featured-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.blog-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-medium);
}

.blog-img-container {
    position: relative;
    padding-bottom: 56.25%;
    overflow: hidden;
}

.blog-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.blog-card:hover .blog-img {
    transform: scale(1.03);
}

.blog-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card-title {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.3;
}

.blog-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

/* Tools Section */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
}

.tool-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-medium);
}

.tool-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background-color: var(--accent-light);
    color: var(--accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.tool-card-title {
    font-size: 1.35rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.tool-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 32px;
    flex-grow: 1;
}

/* Single Post Reader Layout */
.single-post-view {
    padding: 120px 0 96px 0;
    display: none;
}

.back-btn-container {
    margin-bottom: 32px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.back-btn:hover {
    color: var(--accent-dark);
}

.post-header {
    margin-bottom: 48px;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.post-title {
    font-size: 3rem;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.15;
}

.post-meta {
    justify-content: center;
    margin-bottom: 0;
}

.post-hero-image-container {
    position: relative;
    padding-bottom: 45%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    margin-bottom: 56px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.post-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-content {
    max-width: 720px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.post-content p {
    margin-bottom: 28px;
}

.post-content h3 {
    font-size: 1.75rem;
    margin: 48px 0 20px 0;
    color: var(--text-primary);
}

.post-content ul, .post-content ol {
    margin-bottom: 28px;
    padding-left: 24px;
}

.post-content li {
    margin-bottom: 12px;
}

/* Fullscreen/Modal Tool Canvas Container */
.tool-workspace-view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 2000;
    background-color: var(--bg-primary);
    display: none;
    flex-direction: column;
}

.tool-workspace-header {
    height: 64px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.tool-workspace-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.15rem;
    font-weight: 700;
}

.tool-workspace-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 40px 24px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.tool-workspace-container {
    width: 100%;
    max-width: 1000px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

/* INTERACTIVE TOOL: Color Palette Generator */
.palette-tool-wrapper {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.palette-generator-area {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    min-height: 280px;
}

.palette-color-slot {
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 24px 16px;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.palette-color-slot:hover {
    transform: scale(1.02);
}

.color-hex {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.9);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.color-actions {
    display: flex;
    gap: 8px;
}

.color-action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    font-size: 0.85rem;
}

.color-action-btn:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-medium);
}

.color-action-btn.locked {
    background-color: var(--accent-dark);
    color: var(--bg-secondary);
}

.palette-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.palette-presets-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-right: 8px;
}

.palette-preset-btn {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-right: 8px;
}

.palette-preset-btn:hover {
    background-color: var(--accent-light);
    color: var(--accent-dark);
}

.palette-tool-tip {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 16px;
}

/* INTERACTIVE TOOL: Writing Prompt Generator */
.prompt-tool-wrapper {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.prompt-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.prompt-filter-btn {
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.prompt-filter-btn.active, .prompt-filter-btn:hover {
    background-color: var(--accent-dark);
    color: var(--bg-secondary);
    border-color: var(--accent-dark);
}

.prompt-display-area {
    min-height: 200px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.prompt-text {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 24px;
    max-width: 800px;
}

.prompt-category-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-medium);
}

.prompt-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* INTERACTIVE TOOL: Mood Board Creator */
.mood-board-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mood-board-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.board-tools {
    display: flex;
    gap: 12px;
}

.board-canvas {
    width: 100%;
    height: 480px;
    background-color: var(--bg-primary);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.board-item {
    position: absolute;
    cursor: move;
    user-select: none;
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.2s ease;
    border: 1px solid transparent;
}

.board-item:hover, .board-item.dragging {
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-medium);
}

.board-sticky-note {
    width: 160px;
    min-height: 160px;
    background-color: #FEF08A; /* Default Yellow */
    padding: 16px;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sticky-note-text {
    width: 100%;
    height: 100px;
    border: none;
    background: transparent;
    resize: none;
    outline: none;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    line-height: 1.4;
    color: #1E293B;
}

.sticky-note-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
}

.sticky-delete-btn, .image-delete-btn {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: transparent;
    padding: 2px;
}

.sticky-delete-btn:hover, .image-delete-btn:hover {
    color: var(--error);
}

.board-image-item {
    width: 180px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.board-image-item img {
    width: 100%;
    height: auto;
    pointer-events: none;
}

.board-image-footer {
    padding: 6px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.9);
}

.board-image-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.modal-input-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 25, 49, 0.4);
    backdrop-filter: blur(4px);
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-input-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-xl);
}

.modal-input-title {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.modal-input-field {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
}

.modal-input-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 64px;
    align-items: flex-start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--accent-light);
    color: var(--accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-info-text h4 {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-info-text p, .contact-info-text a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    font-size: 0.95rem;
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-medium);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 4px rgba(74, 127, 167, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--accent-deep);
    color: var(--bg-secondary);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon-success {
    color: var(--success);
}

/* Footer */
.footer {
    background-color: var(--accent-deep);
    color: rgba(255, 255, 255, 0.8);
    padding: 80px 0 40px 0;
    border-top: 1px solid rgba(179, 207, 229, 0.2);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-bottom: 64px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
}

.footer-logo {
    color: var(--bg-secondary);
}

.footer-desc {
    font-size: 1rem;
    max-width: 400px;
    line-height: 1.5;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-social-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-social-btn:hover {
    background-color: var(--accent-medium);
    transform: translateY(-2px);
}

.footer-right {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-newsletter-title {
    color: var(--bg-secondary);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.footer-newsletter-desc {
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-input {
    flex-grow: 1;
    padding: 14px 18px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(179, 207, 229, 0.2);
    border-radius: var(--radius-md);
    color: var(--bg-secondary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--accent-medium);
    background-color: rgba(255, 255, 255, 0.1);
}

.newsletter-submit {
    background-color: var(--bg-secondary);
    color: var(--accent-deep);
    padding: 0 24px;
    font-weight: 700;
    border-radius: var(--radius-md);
}

.newsletter-submit:hover {
    background-color: var(--accent-light);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Animations */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries */
@media (max-width: 991px) {
    .section {
        padding: 64px 0;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-left {
        position: static;
    }
    
    .blog-featured-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-featured-img-container {
        padding-bottom: 50%;
    }
    
    .blog-featured-info {
        padding: 32px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* Color Palette Search Bar */
.palette-search-container {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.palette-search-container input {
    flex: 1;
}

/* INTERACTIVE TOOL: UTM Campaign Link Builder */
.utm-tool-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.utm-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: start;
}

.utm-inputs-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius-lg);
}

.utm-inputs-panel .form-group:first-child,
.utm-inputs-panel .form-group:nth-child(2) {
    grid-column: span 2;
}

.utm-preview-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
}

.utm-panel-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-dark);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.utm-result-box {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    word-break: break-all;
    min-height: 80px;
    margin-bottom: 16px;
    line-height: 1.4;
}

.utm-action-buttons {
    display: flex;
    gap: 12px;
}

.utm-qr-display {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.qr-container-box {
    background-color: #ffffff;
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    display: inline-block;
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
}

.qr-container-box img {
    display: block;
    width: 150px;
    height: 150px;
}

/* FAQ Accordion Styles */
.tools-faq-section {
    margin-top: 80px;
    padding-top: 48px;
    border-top: 1px solid rgba(179, 207, 229, 0.3);
}

.faq-section-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-dark);
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: -0.02em;
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: rgba(246, 250, 253, 0.4);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item.active {
    border-color: var(--accent-medium);
    background-color: #ffffff;
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    background: transparent;
    border: none;
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--accent-medium);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding: 0 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

/* INTERACTIVE TOOL: Banglish Keyboard Converter */
.banglish-tool-wrapper {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.banglish-editor-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.banglish-textarea {
    width: 100%;
    height: 320px;
    padding: 24px;
    border: none;
    background-color: transparent;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.15rem;
    line-height: 1.6;
    resize: none;
    outline: none;
}

/* Floating Suggestions Box */
.banglish-suggestions {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    min-width: 160px;
    max-height: 220px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.suggestion-item {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    border-bottom: 1px solid rgba(179, 207, 229, 0.1);
    transition: var(--transition-fast);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover, .suggestion-item.active {
    background-color: var(--accent-medium);
    color: #ffffff;
}

.banglish-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background-color: rgba(179, 207, 229, 0.05);
    border-top: 1px solid var(--border-color);
}

.status-counters {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.status-counters strong {
    color: var(--accent-dark);
}

.status-action-buttons {
    display: flex;
    gap: 12px;
}

.banglish-guide-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}

.guide-title {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-title i {
    color: var(--accent-medium);
}

.guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.guide-column h5 {
    font-size: 0.95rem;
    color: var(--accent-dark);
    margin-bottom: 12px;
}

.guide-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 16px;
}

.guide-column li {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.guide-column code {
    font-family: monospace;
    background-color: rgba(74, 127, 167, 0.1);
    color: var(--accent-medium);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

@media (max-width: 767px) {
    .navbar .container {
        position: relative;
    }
    
    .nav-links {
        position: absolute;
        top: 72px;
        left: -24px;
        width: calc(100% + 48px);
        background-color: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: var(--transition-smooth);
    }
    
    .nav-links.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 10px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    /* Hero Section Responsive Tweaks */
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
        gap: 12px;
    }

    .hero-ctas .btn {
        width: 100%;
        text-align: center;
    }

    .wave-canvas-container {
        width: 280px;
        height: 280px;
        margin: 0 auto;
    }

    .profile-avatar-placeholder {
        width: 120px;
        height: 120px;
    }

    .card-1 {
        left: -10px;
        top: 15px;
    }

    .card-2 {
        right: -10px;
        bottom: 15px;
    }

    /* About Section */
    .about-bio {
        font-size: 1rem;
    }
    
    /* Contact Form Mobile Padding */
    .contact-form-container {
        padding: 24px 16px;
    }
    
    /* Color Palette Tool Mobile Tweaks */
    .palette-search-container {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }

    .palette-search-container input {
        width: 100%;
    }

    .palette-search-container button {
        width: 100%;
    }

    .palette-generator-area {
        grid-template-columns: 1fr;
        min-height: auto;
        gap: 8px;
    }
    
    .palette-color-slot {
        height: 80px;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 12px 20px;
        border-radius: var(--radius-md);
    }
    
    .color-hex {
        margin-bottom: 0;
        font-size: 0.95rem;
    }

    .palette-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
    }

    .presets-section {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
    }

    .palette-preset-btn {
        margin-right: 0;
    }

    .actions-section {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .actions-section .btn {
        width: 100%;
        text-align: center;
    }

    /* Writing Prompt Tool Mobile Tweaks */
    .prompt-text {
        font-size: 1.15rem;
        line-height: 1.5;
    }

    .prompt-actions {
        flex-direction: column;
        gap: 10px;
    }

    .prompt-actions .btn {
        width: 100%;
        text-align: center;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    /* UTM Builder Mobile Tweaks */
    .utm-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .utm-inputs-panel {
        grid-template-columns: 1fr;
        padding: 16px;
    }
    
    .utm-inputs-panel .form-group:first-child,
    .utm-inputs-panel .form-group:nth-child(2) {
        grid-column: span 1;
    }

    .utm-action-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .utm-action-buttons .btn {
        width: 100%;
        text-align: center;
    }

    /* Mood Board mobile Usability */
    .board-item {
        touch-action: none; /* Crucial for touch dragging */
    }

    /* Banglish Keyboard Mobile Tweaks */
    .banglish-textarea {
        height: 240px;
        padding: 16px;
        font-size: 1.05rem;
    }

    .banglish-status-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 16px;
    }

    .status-counters {
        justify-content: center;
    }

    .status-action-buttons {
        flex-direction: column;
        gap: 8px;
    }

    .status-action-buttons .btn {
        width: 100%;
        text-align: center;
    }

    .banglish-guide-card {
        padding: 16px;
    }

    .guide-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .guide-column ul {
        grid-template-columns: 1fr;
    }
}