/* =============================================
   BD AI Playground - Landing Page Styles
   Premium Dark Futuristic Design
   ============================================= */

:root {
    /* Core Colors */
    --bg-primary: #0b1020;
    --bg-secondary: #141c2f;
    --bg-tertiary: #1a2440;

    /* Brand Colors */
    --cosmic-pink: #ff4fd8;
    --cosmic-pink-light: #ff7ae3;
    --cosmic-pink-dark: #e63bbf;
    --deep-space-blue: #9b5cff;
    --deep-space-blue-light: #b88aff;
    --bangladesh-green: #006a4e;
    --bangladesh-green-light: #00a86b;
    --bangladesh-red: #f42a41;
    --bangladesh-red-light: #ff5c6c;

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #b8bfd4;
    --text-muted: #8a94ad;

    /* Surfaces */
    --surface: rgba(20, 28, 47, 0.78);
    --surface-light: rgba(255, 255, 255, 0.06);
    --surface-hover: rgba(255, 255, 255, 0.1);

    /* Borders */
    --border: rgba(255, 79, 216, 0.16);
    --border-hover: rgba(255, 79, 216, 0.3);
    --border-focus: rgba(255, 79, 216, 0.65);

    /* Effects */
    --shadow-card:
        0 24px 70px rgba(0, 0, 0, 0.45),
        0 0 40px rgba(255, 79, 216, 0.08);
    --shadow-glow:
        0 0 30px rgba(255, 79, 216, 0.2),
        0 0 60px rgba(155, 92, 255, 0.1);
    --glow-pink: 0 0 20px rgba(255, 79, 216, 0.3);
    --glow-green: 0 0 20px rgba(0, 168, 107, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--cosmic-pink), var(--deep-space-blue));
    --gradient-text: linear-gradient(135deg, #ffffff 10%, var(--cosmic-pink) 55%, var(--deep-space-blue) 100%);
    --gradient-green: linear-gradient(135deg, var(--bangladesh-green-light), var(--bangladesh-green));
    --gradient-red: linear-gradient(135deg, var(--bangladesh-red-light), var(--bangladesh-red));

    /* Radii */
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 12px;
    --radius-sm: 8px;

    /* Transitions */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Fonts */
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* =============================================
   Reset & Base
   ============================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 79, 216, 0.12), transparent 32%),
        radial-gradient(circle at 85% 80%, rgba(155, 92, 255, 0.1), transparent 30%),
        radial-gradient(circle at 50% 50%, rgba(0, 168, 107, 0.04), transparent 50%),
        linear-gradient(135deg, #0b1020 0%, #0d1326 50%, #141c2f 100%);
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 80%);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}

img,
svg {
    display: block;
    max-width: 100%;
}

::selection {
    background: rgba(255, 79, 216, 0.3);
    color: #ffffff;
}

/* =============================================
   Particle Network Canvas
   ============================================= */

#particle-network {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.6;
}

/* =============================================
   Navigation
   ============================================= */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
    background: transparent;
}

.site-nav.scrolled {
    background: rgba(11, 16, 32, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 79, 216, 0.1);
    padding: 10px 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-core {
    filter: drop-shadow(0 0 12px rgba(255, 79, 216, 0.4));
    transition: transform var(--transition);
}

.nav-logo:hover .logo-core {
    transform: scale(1.05) rotate(5deg);
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-logo-text span {
    font-weight: 400;
    opacity: 0.8;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 4px 0;
    transition: color var(--transition);
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-nav-login {
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--surface-light);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.btn-nav-login:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: var(--glow-pink);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: var(--radius-sm);
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   Hero Section
   ============================================= */

.hero {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 60px;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out;
}

.hero-logo {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.hero-logo-core {
    filter: drop-shadow(0 0 40px rgba(255, 79, 216, 0.3));
    animation: float 6s ease-in-out infinite;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 16px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 60px rgba(255, 79, 216, 0.2);
}

.hero-title span {
    font-weight: 400;
    opacity: 0.85;
}

.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow:
        0 8px 30px rgba(255, 79, 216, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 12px 40px rgba(255, 79, 216, 0.35),
        0 0 30px rgba(155, 92, 255, 0.2);
}

.btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: var(--surface-light);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--glow-pink);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--border), transparent);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--cosmic-pink);
    border-radius: 3px;
    animation: scrollWheel 2s ease-in-out infinite;
}

/* =============================================
   Sections General
   ============================================= */

.section {
    position: relative;
    z-index: 2;
    padding: 100px 24px;
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cosmic-pink);
    background: rgba(255, 79, 216, 0.1);
    border: 1px solid rgba(255, 79, 216, 0.2);
    margin-bottom: 16px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* =============================================
   Featured Projects
   ============================================= */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    position: relative;
    padding: 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition);
    overflow: hidden;
    cursor: pointer;
}

.project-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cosmic-pink), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card-glow {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 79, 216, 0.1), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    transition: all var(--transition-slow);
}

.project-card:hover .project-card-glow {
    transform: scale(1.5);
}

.project-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #ffffff;
    margin-bottom: 20px;
    box-shadow: var(--glow-pink);
    transition: transform var(--transition);
}

.project-card:hover .project-icon {
    transform: scale(1.1) rotate(-5deg);
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.project-tags span {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--surface-light);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.project-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--bangladesh-green-light);
    box-shadow: var(--glow-green);
    animation: pulse 2s ease-in-out infinite;
}

/* =============================================
   What We Build
   ============================================= */

.build-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.build-item {
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition);
    text-align: center;
}

.build-item:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.build-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--surface-light);
    color: var(--cosmic-pink);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.build-item:hover .build-icon {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--glow-pink);
    transform: scale(1.1);
}

.build-item h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.build-item p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* =============================================
   Updates Feed
   ============================================= */

.updates-feed {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.update-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition);
}

.update-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.update-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.update-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: #ffffff;
    flex-shrink: 0;
}

.update-meta {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.update-author {
    font-size: 0.9rem;
    font-weight: 600;
}

.update-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.update-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: rgba(0, 168, 107, 0.1);
    color: var(--bangladesh-green-light);
    border: 1px solid rgba(0, 168, 107, 0.2);
}

.update-content h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.update-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.update-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.update-action {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: all var(--transition);
}

.update-action:hover {
    color: var(--cosmic-pink);
    background: rgba(255, 79, 216, 0.1);
}

/* =============================================
   Community Section
   ============================================= */

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.community-card {
    padding: 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition);
    text-align: center;
}

.community-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.community-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--glow-pink);
    transition: transform var(--transition);
}

.community-card:hover .community-icon {
    transform: scale(1.1) rotate(10deg);
}

.community-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.community-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.community-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--surface-light);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.community-roadmap {
    text-align: left;
}

.roadmap-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.roadmap-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.roadmap-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cosmic-pink);
    box-shadow: var(--glow-pink);
    flex-shrink: 0;
}

/* =============================================
   Feedback Section
   ============================================= */

.feedback-container {
    max-width: 600px;
    margin: 0 auto;
}

.feedback-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group .optional {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(3, 12, 23, 0.58);
    border: 1px solid rgba(148, 163, 184, 0.16);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #62738a;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: rgba(255, 79, 216, 0.3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--border-focus);
    box-shadow:
        0 0 0 3px rgba(255, 79, 216, 0.1),
        0 0 22px rgba(255, 79, 216, 0.08);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23b8bfd4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

.feedback-status {
    margin-top: 16px;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
    display: none;
}

.feedback-status.success {
    display: block;
    background: rgba(0, 168, 107, 0.1);
    color: var(--bangladesh-green-light);
    border: 1px solid rgba(0, 168, 107, 0.2);
}

.feedback-status.error {
    display: block;
    background: rgba(244, 42, 65, 0.1);
    color: var(--bangladesh-red-light);
    border: 1px solid rgba(244, 42, 65, 0.2);
}

/* =============================================
   Security Section
   ============================================= */

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.security-item {
    padding: 28px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
    transition: all var(--transition);
}

.security-item:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 168, 107, 0.3);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 168, 107, 0.1);
}

.security-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 168, 107, 0.1);
    color: var(--bangladesh-green-light);
    border: 1px solid rgba(0, 168, 107, 0.2);
    transition: all var(--transition);
}

.security-item:hover .security-icon {
    background: var(--gradient-green);
    color: #ffffff;
    box-shadow: var(--glow-green);
    transform: scale(1.1);
}

.security-item h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.security-item p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* =============================================
   Footer
   ============================================= */

.site-footer {
    position: relative;
    z-index: 2;
    background: rgba(8, 12, 25, 0.9);
    border-top: 1px solid var(--border);
    padding: 60px 24px 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}

.footer-brand .footer-tagline {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo span {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-column a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}

.footer-column a:hover {
    color: var(--cosmic-pink);
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-location {
    display: flex;
    align-items: center;
    gap: 4px;
}

.heart {
    color: var(--bangladesh-red);
    animation: heartbeat 1.5s ease-in-out infinite;
    display: inline-block;
}

/* =============================================
   Cookie Banner
   ============================================= */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2000;
    background: rgba(11, 16, 32, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    padding: 20px 24px;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
    box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.5);
}

.cookie-banner.visible {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.cookie-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--glow-pink);
}

.cookie-text {
    flex: 1;
    min-width: 250px;
}

.cookie-text h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.cookie-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.cookie-links {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.cookie-links a {
    font-size: 0.78rem;
    color: var(--cosmic-pink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.cookie-links a:hover {
    color: var(--cosmic-pink-light);
}

.cookie-sep {
    color: var(--text-muted);
}

.cookie-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition);
}

.cookie-accept {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--glow-pink);
}

.cookie-accept:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(255, 79, 216, 0.3);
}

.cookie-reject {
    background: var(--surface-light);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.cookie-reject:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

.cookie-manage {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cookie-manage:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* =============================================
   Cookie Modal
   ============================================= */

.cookie-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.cookie-modal.visible {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.cookie-modal-content {
    width: 100%;
    max-width: 500px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    animation: scaleIn 0.3s ease-out;
}

.cookie-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cookie-modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
}

.cookie-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: all var(--transition);
}

.cookie-modal-close:hover {
    background: var(--surface-light);
    color: var(--text-primary);
}

.cookie-modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cookie-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px;
    background: var(--surface-light);
    border-radius: var(--radius-md);
}

.cookie-option-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.cookie-option-text p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.cookie-toggle {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(0, 168, 107, 0.1);
    color: var(--bangladesh-green-light);
    border: 1px solid rgba(0, 168, 107, 0.2);
    flex-shrink: 0;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    transition: all var(--transition);
}

.slider::before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: #ffffff;
    border-radius: 50%;
    transition: all var(--transition);
}

.switch input:checked + .slider {
    background: var(--gradient-primary);
}

.switch input:checked + .slider::before {
    transform: translateX(20px);
}

.cookie-modal-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: flex-end;
}

.cookie-save {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--glow-pink);
}

.cookie-save:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(255, 79, 216, 0.3);
}

/* =============================================
   Animations
   ============================================= */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(12px);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.1);
    }
    40% {
        transform: scale(1);
    }
    60% {
        transform: scale(1.1);
    }
}

/* =============================================
   Scroll Reveal
   ============================================= */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =============================================
   Responsive Design
   ============================================= */

@media (max-width: 1024px) {
    .nav-links {
        gap: 20px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(11, 16, 32, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        padding: 40px;
        transition: right var(--transition-slow);
        border-left: 1px solid var(--border);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-actions .btn-nav-login {
        display: none;
    }

    .hero {
        padding: 100px 20px 40px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto 40px;
    }

    .btn-lg {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .section {
        padding: 60px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .cookie-actions {
        width: 100%;
    }

    .cookie-btn {
        flex: 1;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-headline {
        font-size: 1.1rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .projects-grid,
    .build-grid,
    .community-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .cookie-actions {
        flex-direction: column;
    }

    .cookie-btn {
        width: 100%;
    }
}

/* =============================================
   Accessibility
   ============================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

:focus-visible {
    outline: 2px solid var(--cosmic-pink);
    outline-offset: 3px;
}