/* ================================================================
   TRUESENDY — Luminous Orb Light Theme
   Inspired by SynFlow: Massive gradient sphere · Pristine white ·
   Grain texture · UHD 60fps animations · Fully responsive
   ================================================================ */

/* ── SVG Grain Filter (injected via CSS pseudo-element) ── */

:root {
    /* ── Clean Light Backgrounds ── */
    --bg-white: #ffffff;
    --bg-light: #f7f9fc;
    --bg-subtle: #eef2f7;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-card-solid: #ffffff;

    /* ── Royal Blue Primary ── */
    --blue-900: #1e2a78;
    --blue-800: #1a3af5;
    --blue-700: #2549f7;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-300: #93c5fd;
    --blue-200: #bfdbfe;
    --blue-100: #dbeafe;
    --blue-50: #eff6ff;
    --blue-glow: rgba(37, 99, 235, 0.25);

    /* ── Indigo Accent ── */
    --indigo: #4f46e5;
    --indigo-light: #818cf8;
    --indigo-glow: rgba(79, 70, 229, 0.2);

    /* ── Extra Accents ── */
    --purple: #7c3aed;

    /* ── Status ── */
    --success: #10b981;
    --success-light: #d1fae5;
    --success-glow: rgba(16, 185, 129, 0.15);
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --danger-glow: rgba(239, 68, 68, 0.12);
    --warning: #f59e0b;
    --warning-light: #fef3c7;

    /* ── Typography ── */
    --text-heading: #1e2a78;
    --text-body: #1e3a5f;
    --text-secondary: #3b5998;
    --text-muted: #6b7fa8;
    --text-white: #ffffff;

    /* ── Borders & Shadows ── */
    --border-light: rgba(0, 0, 0, 0.06);
    --border-card: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.1), 0 8px 24px rgba(0, 0, 0, 0.05);
    --shadow-blue: 0 8px 30px rgba(37, 99, 235, 0.2), 0 4px 12px rgba(37, 99, 235, 0.1);

    /* ── Radii ── */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 999px;

    /* ── Motion ── */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s var(--ease-out-expo);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-white);
    color: var(--text-body);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', 'Inter', -apple-system, sans-serif;
    color: var(--text-heading);
}

::selection {
    background: var(--blue-200);
    color: var(--blue-900);
}

/* ======================== FLUID MOUSE ORB ======================== */

#mouse-orb {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
    will-change: transform;
    background: radial-gradient(
        circle at 35% 35%,
        rgba(255, 255, 255, 0.55) 0%,
        rgba(147, 197, 253, 0.3) 25%,
        rgba(59, 130, 246, 0.12) 55%,
        transparent 100%
    );
    filter: blur(60px);
    opacity: 0;
    transition: opacity 1s ease;
    animation: orb-morph 14s ease-in-out infinite;
    top: 0;
    left: 0;
    transform: translate(-50%, -50%);
}

/* Show on mouse move — stays subtle, never blocks content */
#mouse-orb.visible {
    opacity: 0.7;
}

/* Hide when user is in the verification engine */
#mouse-orb.engine-active {
    opacity: 0 !important;
    transition: opacity 0.5s ease;
}

/* The water-like slow morphing of the orb border-radius */
@keyframes orb-morph {
    0%,  100% { border-radius: 50%; }
    15%  { border-radius: 46% 54% 50% 50% / 52% 48% 52% 48%; }
    30%  { border-radius: 54% 46% 48% 52% / 48% 52% 50% 50%; }
    50%  { border-radius: 50% 50% 54% 46% / 54% 46% 50% 50%; }
    65%  { border-radius: 48% 52% 46% 54% / 50% 50% 48% 52%; }
    80%  { border-radius: 52% 48% 52% 48% / 46% 54% 52% 48%; }
}

/* Touch devices — smaller, less blur */
@media (hover: none) and (pointer: coarse) {
    #mouse-orb {
        display: none; /* no cursor on touch — disable entirely */
    }
}

/* ======================== ANIME BACKGROUND ======================== */

/* Hide the old dark-theme background elements */
.bg-grid { display: none; }
.lightning-flash { display: none; }

/* The main gradient orb — massive, luminous, animated */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    will-change: transform;
}

.bg-glow-1 {
    width: min(70vw, 700px);
    height: min(70vw, 700px);
    top: -15%;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(
        circle at 50% 40%,
        rgba(37, 99, 235, 0.22) 0%,
        rgba(59, 130, 246, 0.14) 40%,
        rgba(96, 165, 250, 0.07) 70%,
        transparent 100%
    );
    filter: blur(80px);
    animation: orb-breathe 12s ease-in-out infinite;
    /* KEY FIX: low opacity — decorative tint, NOT a blocking wall */
    opacity: 1;
}

/* Grain texture overlay on the orb */
.bg-glow-1::after {
    content: '';
    position: absolute;
    inset: -10%;
    border-radius: 50%;
    opacity: 0.25;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    mix-blend-mode: overlay;
}

.bg-glow-2 {
    width: min(40vw, 400px);
    height: min(40vw, 400px);
    bottom: 20%;
    right: -5%;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(79, 70, 229, 0.12) 0%,
        rgba(99, 102, 241, 0.07) 50%,
        transparent 100%
    );
    filter: blur(80px);
    opacity: 1;
    animation: orb-float-secondary 18s ease-in-out infinite;
}

.bg-glow-3 {
    width: min(30vw, 300px);
    height: min(30vw, 300px);
    bottom: 35%;
    left: -3%;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(59, 130, 246, 0.10) 0%,
        rgba(96, 165, 250, 0.06) 50%,
        transparent 100%
    );
    filter: blur(80px);
    opacity: 1;
    animation: orb-float-tertiary 22s ease-in-out infinite;
}

@keyframes orb-breathe {
    0%, 100% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.06); }
}

@keyframes orb-drift {
    0%, 100% { border-radius: 50%; }
    25% { border-radius: 48% 52% 50% 50% / 52% 48% 52% 48%; }
    50% { border-radius: 52% 48% 48% 52% / 48% 52% 48% 52%; }
    75% { border-radius: 50% 50% 52% 48% / 50% 48% 50% 52%; }
}

@keyframes orb-float-secondary {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-30px, 40px) scale(1.08); }
    66% { transform: translate(20px, -30px) scale(0.95); }
}

@keyframes orb-float-tertiary {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(40px, -50px); }
}

/* Particles — white / semi-transparent on light bg */
.particles { position: fixed; inset: 0; z-index: 1; pointer-events: none; }

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.35);
    animation: particle-float linear infinite;
}

@keyframes particle-float {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.5; }
    90% { opacity: 0.2; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ======================== LAYOUT ======================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

.section {
    padding: 7rem 0;
    position: relative;
    z-index: 2;
}

.section-alt {
    background: var(--bg-light);
}

.section-header { text-align: center; margin-bottom: 4rem; }

.section-tag {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: var(--blue-50);
    color: var(--blue-600);
    padding: 0.45rem 1.25rem; border-radius: var(--radius-full);
    font-size: 0.75rem; font-weight: 600; letter-spacing: 1.5px;
    text-transform: uppercase; margin-bottom: 1.5rem;
    border: 1px solid var(--blue-100);
}

.section-header h2 {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -0.5px;
    color: var(--text-heading);
}

.section-desc {
    font-size: 1.1rem; color: var(--text-secondary);
    max-width: 580px; margin: 0 auto; line-height: 1.75;
}

/* ======================== GRADIENT TEXT ======================== */
.gradient-text {
    background: linear-gradient(135deg, var(--blue-800), var(--blue-500), var(--indigo));
    background-size: 200% 200%;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 5s ease-in-out infinite;
}

@keyframes gradient-flow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ======================== GLASS CARDS (Light) ======================== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    transition: all var(--transition-smooth);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: rgba(59, 130, 246, 0.15);
}

.glow-card {
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.glow-card:hover {
    box-shadow: var(--shadow-xl), 0 0 60px rgba(59, 130, 246, 0.06);
}

/* ======================== BUTTONS ======================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-family: 'Inter', sans-serif; font-weight: 600; font-size: 0.92rem;
    padding: 0.85rem 1.75rem; border-radius: var(--radius-md); border: none;
    cursor: pointer; transition: all var(--transition-fast);
    position: relative; overflow: hidden; white-space: nowrap;
    letter-spacing: 0.01em;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-700), var(--blue-600));
    color: var(--text-white);
    font-weight: 700;
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.3), 0 4px 16px rgba(37, 99, 235, 0.15);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1.5px solid var(--border-card);
}

.btn-ghost:hover {
    color: var(--blue-600);
    border-color: var(--blue-300);
    background: var(--blue-50);
    box-shadow: var(--shadow-sm);
}

.btn-lg {
    padding: 1.05rem 2.75rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    min-height: 52px;
}

.btn-download {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white; font-weight: 700;
    padding: 0.85rem 2rem; border-radius: var(--radius-md);
    text-decoration: none;
    box-shadow: 0 4px 16px var(--success-glow);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--success-glow);
}

.btn-shine {
    position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 4s ease-in-out infinite;
}

@keyframes shine { 0% { left: -100%; } 40%, 100% { left: 100%; } }

.btn:disabled {
    opacity: 0.4; cursor: not-allowed; transform: none !important;
    box-shadow: none !important;
}

/* ======================== NAVBAR ======================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 1rem 0;
    /* Always frosted — never invisible on white bg */
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(28px) saturate(200%);
    -webkit-backdrop-filter: blur(28px) saturate(200%);
    border-bottom: 1px solid var(--border-light);
    padding: 0.65rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem; font-weight: 900;
    display: flex; align-items: center; gap: 0.2rem;
    letter-spacing: -0.5px;
    /* 'True' is blue too — full logo is branded blue */
    color: var(--blue-700);
    transition: color var(--transition-smooth);
    z-index: 10;
    text-shadow: 0 0 30px rgba(37, 99, 235, 0.15);
}

.navbar.scrolled .nav-logo { color: var(--blue-700); }

.logo-icon {
    height: 28px;
    vertical-align: middle;
    margin-right: 0.3rem;
    animation: logo-glow 3s ease-in-out infinite;
    transition: filter var(--transition-smooth);
    filter: drop-shadow(0 0 10px var(--blue-glow));
}

@keyframes logo-glow {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.15) rotate(5deg); }
}

.logo-accent {
    color: var(--blue-500);
    transition: color var(--transition-smooth);
    background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links { display: flex; gap: 2.25rem; }

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.88rem; font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    letter-spacing: 0.01em;
}

.navbar.scrolled .nav-links a { color: var(--text-secondary); }

.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--blue-500);
    border-radius: 1px;
    transition: width 0.3s var(--ease-out-expo);
}

.nav-links a:hover { color: var(--blue-600); }
.navbar.scrolled .nav-links a:hover { color: var(--blue-600); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.credits-pill {
    display: flex; align-items: center; gap: 0.5rem;
    background: var(--blue-50);
    border: 1px solid var(--blue-100);
    padding: 0.4rem 1rem; border-radius: var(--radius-full);
    font-size: 0.8rem; color: var(--text-body);
    transition: all var(--transition-smooth);
}

.navbar.scrolled .credits-pill {
    background: var(--blue-50);
    border-color: var(--blue-100);
    color: var(--text-body);
}

.credits-pill strong {
    color: var(--blue-600); font-family: 'JetBrains Mono', monospace;
}

.credits-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--blue-500);
    box-shadow: 0 0 8px var(--blue-glow);
    animation: dot-breathe 2s ease-in-out infinite;
}

@keyframes dot-breathe {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.nav-auth-btn {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: white; padding: 0.55rem 1.4rem; border-radius: var(--radius-sm);
    font-size: 0.85rem; font-weight: 700; border: none;
    cursor: pointer; transition: all var(--transition-fast);
    box-shadow: 0 2px 12px var(--blue-glow);
    letter-spacing: 0.01em;
}

.navbar.scrolled .nav-auth-btn {
    background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
    box-shadow: 0 2px 16px var(--blue-glow);
}

.nav-auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--blue-glow);
}

/* Mobile */
.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
    z-index: 10;
}

.mobile-menu-btn span {
    width: 22px; height: 2px;
    /* Always dark on light theme */
    background: var(--text-heading);
    border-radius: 2px; transition: all 0.3s ease;
}

.mobile-menu {
    display: none; position: fixed; top: 60px; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.97); backdrop-filter: blur(24px);
    padding: 1rem 2rem; flex-direction: column; gap: 0.5rem; z-index: 999;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
    color: var(--text-body); padding: 0.85rem 0; font-weight: 500;
    border-bottom: 1px solid var(--border-light);
    transition: color var(--transition-fast);
    min-height: 44px; display: flex; align-items: center;
}

.mobile-menu a:hover { color: var(--blue-600); }

/* ======================== AUTH MODALS ======================== */
.modal-overlay {
    display: none; position: fixed; inset: 0; z-index: 2000;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(12px);
    align-items: center; justify-content: center;
    padding: 1rem;
}

.modal-overlay.open { display: flex; }

.modal {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: 2.75rem; width: 100%; max-width: 420px;
    box-shadow: var(--shadow-xl);
    animation: modal-in 0.4s var(--ease-out-expo);
    position: relative;
}

@keyframes modal-in {
    from { opacity: 0; transform: translateY(24px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal h2 { font-size: 1.5rem; margin-bottom: 0.5rem; font-weight: 700; color: var(--text-heading); }
.modal .modal-sub { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 1.75rem; }

.modal-close {
    position: absolute; top: 1.1rem; right: 1.1rem; background: none; border: none;
    color: var(--text-muted); font-size: 1.5rem; cursor: pointer; line-height: 1;
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
    min-width: 44px; min-height: 44px;
}

.modal-close:hover { color: var(--text-heading); background: var(--bg-subtle); }

.form-group { margin-bottom: 1.1rem; }
.form-group label {
    display: block; font-size: 0.78rem; color: var(--text-secondary);
    margin-bottom: 0.4rem; font-weight: 600; letter-spacing: 0.02em;
}

.form-input {
    width: 100%;
    background: var(--bg-light);
    border: 1.5px solid var(--border-card);
    color: var(--text-heading); padding: 0.82rem 1rem;
    border-radius: var(--radius-sm); font-size: 0.95rem;
    font-family: 'Inter', sans-serif; outline: none;
    transition: all var(--transition-fast);
    min-height: 44px;
}

.form-input:focus {
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-white);
}

.form-input::placeholder { color: var(--text-muted); }

.form-error { color: var(--danger); font-size: 0.8rem; margin-top: 0.75rem; min-height: 1.2rem; }
.form-success { color: var(--success); font-size: 0.8rem; margin-top: 0.75rem; }

.form-footer {
    margin-top: 1.25rem; font-size: 0.85rem;
    color: var(--text-secondary); text-align: center;
}

.form-footer a {
    color: var(--blue-600); cursor: pointer; font-weight: 600;
}

.form-footer a:hover { text-decoration: underline; }

.otp-input-group {
    display: flex; gap: 0.6rem; justify-content: center; margin: 1.75rem 0;
}

.otp-digit {
    width: 48px; height: 58px; text-align: center;
    font-size: 1.4rem; font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-light);
    border: 1.5px solid var(--border-card);
    border-radius: var(--radius-sm);
    color: var(--blue-700); outline: none;
    transition: all var(--transition-fast);
    min-width: 44px;
}

.otp-digit:focus {
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-white);
}

/* ======================== HERO ======================== */
.hero {
    padding: 12rem 2rem 6rem;
    max-width: 100%; margin: 0 auto; text-align: center;
    position: relative;
    z-index: 2;
    /* background removed to reveal light theme orbs */
}

.hero-content { position: relative; z-index: 3; max-width: 1200px; margin: 0 auto; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 0.6rem;
    background: var(--blue-50);
    border: 1px solid var(--blue-100);
    padding: 0.5rem 1.25rem; border-radius: var(--radius-full);
    font-size: 0.82rem; color: var(--blue-700);
    font-weight: 600; margin-bottom: 2.25rem;
}

.badge-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--blue-600);
    box-shadow: 0 0 8px var(--blue-glow);
    animation: dot-breathe 2s ease-in-out infinite;
}

.hero h1 {
    font-size: clamp(2.5rem, 6.5vw, 4.8rem);
    font-weight: 900; line-height: 1.05;
    margin-bottom: 1.75rem; letter-spacing: -2px;
    color: var(--text-heading);
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--blue-800), var(--blue-500), var(--indigo));
    background-size: 200% 200%;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 5s ease-in-out infinite;
}

.hero-sub {
    font-size: 1.15rem; color: var(--text-body);
    max-width: 600px; margin: 0 auto 2.75rem; line-height: 1.8;
}

.hero-cta {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}

/* ======================== TRUST BAR ======================== */
.trust-bar {
    display: flex; justify-content: center; align-items: center; gap: 3.5rem;
    margin-top: 5.5rem; padding: 2.75rem 3.5rem;
    max-width: 1200px; margin-left: auto; margin-right: auto;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl); flex-wrap: wrap;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 3;
}

.trust-item { text-align: center; }

.trust-number {
    font-size: 2.1rem; font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: var(--blue-700);
}

.trust-label {
    font-size: 0.75rem; color: var(--text-muted); margin-top: 0.3rem;
    text-transform: uppercase; letter-spacing: 0.8px;
}

.trust-divider {
    width: 1px; height: 44px;
    background: linear-gradient(180deg, transparent, var(--border-card), transparent);
}

/* ======================== PROBLEM / SOLUTION ======================== */
.problem-section { background: var(--bg-white); }

.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }

.problem-card, .solution-card { padding: 2.75rem; }

.card-icon {
    width: 52px; height: 52px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; font-weight: 800; margin-bottom: 1.5rem;
}

.card-icon-danger { background: var(--danger-light); color: var(--danger); }
.card-icon-success { background: var(--success-light); color: var(--success); }

.problem-card h3, .solution-card h3 {
    font-size: 1.3rem; margin-bottom: 1.25rem; font-weight: 700;
}

.check-list { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }

.check-list li {
    padding-left: 1.75rem; position: relative;
    color: var(--text-secondary); font-size: 0.93rem;
}

.check-list li::before { position: absolute; left: 0; top: 2px; font-size: 0.8rem; }
.danger-list li::before { content: '✕'; color: var(--danger); }
.success-list li::before { content: '✓'; color: var(--success); font-weight: 700; }

/* ======================== FEATURES ======================== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.feature-card { padding: 2.25rem; text-align: left; }

.feature-card:hover .feature-icon { transform: scale(1.15) rotate(-5deg); }

.feature-icon {
    font-size: 2rem; margin-bottom: 1.15rem;
    transition: transform 0.3s var(--ease-spring);
    display: inline-block;
}

.feature-card h3 { font-size: 1.08rem; margin-bottom: 0.75rem; font-weight: 700; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; }

/* ======================== STEPS ======================== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }

.step-card { text-align: center; position: relative; padding: 0 1rem; }

.step-number {
    font-size: 4.5rem; font-weight: 900;
    font-family: 'JetBrains Mono', monospace; line-height: 1;
    margin-bottom: 1.25rem;
    color: var(--blue-100);
}

.step-content h3 { font-size: 1.15rem; margin-bottom: 0.75rem; font-weight: 700; }
.step-content p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; }

.step-line {
    position: absolute; top: 2.25rem; right: -1.25rem;
    width: 2.5rem; height: 2px;
    background: linear-gradient(90deg, var(--blue-300), transparent);
    opacity: 0.5;
}

.step-card:last-child .step-line { display: none; }

/* ======================== PRICING ======================== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.pricing-card { padding: 2.75rem; text-align: center; position: relative; }

.pricing-card.featured {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(59, 130, 246, 0.06);
    background: var(--bg-white);
}

.pricing-badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
    color: white; padding: 0.3rem 1.1rem; border-radius: var(--radius-full);
    font-size: 0.68rem; font-weight: 800; text-transform: uppercase;
    letter-spacing: 1.5px;
    box-shadow: 0 4px 16px var(--blue-glow);
}

.pricing-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; font-weight: 700; }

.pricing-price {
    font-size: 3.2rem; font-weight: 900; margin: 1.25rem 0 0.25rem;
    color: var(--text-heading);
    letter-spacing: -1px;
}

.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }

.pricing-credits { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 1.75rem; }

.pricing-features {
    list-style: none; text-align: left; margin-bottom: 2rem;
    display: flex; flex-direction: column; gap: 0.7rem;
}

.pricing-features li {
    font-size: 0.9rem; color: var(--text-secondary);
    padding-left: 1.5rem; position: relative;
}

.pricing-features li::before {
    content: '✓'; position: absolute; left: 0;
    color: var(--blue-500); font-weight: 700;
}

/* ======================== TOOL PANEL ======================== */
.tool-panel {
    padding: 3rem; max-width: 820px; margin: 0 auto;
}

.single-check-zone { width: 100%; }
.input-group { display: flex; gap: 0.75rem; width: 100%; }

.glass-input {
    flex: 1;
    background: var(--bg-light);
    border: 1.5px solid var(--border-card);
    color: var(--text-heading); padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.95rem; font-family: 'Inter', sans-serif; outline: none;
    transition: all var(--transition-fast);
    min-height: 44px;
}

.glass-input:focus {
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--bg-white);
}

.glass-input::placeholder { color: var(--text-muted); }

.divider {
    display: flex; align-items: center; gap: 1rem; margin: 2.25rem 0;
    color: var(--text-muted); font-size: 0.75rem; font-weight: 600; letter-spacing: 1.5px;
}

.divider::before, .divider::after {
    content: ''; flex: 1; height: 1px;
    background: var(--border-card);
}

.upload-zone {
    border: 2px dashed var(--blue-200);
    border-radius: var(--radius-xl);
    padding: 3.5rem 2rem; cursor: pointer;
    transition: all var(--transition-smooth);
    text-align: center;
    background: var(--blue-50);
    position: relative;
}

.upload-zone:hover {
    border-color: var(--blue-400);
    background: var(--blue-100);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.06);
}

.upload-icon-wrap { position: relative; width: 68px; height: 68px; margin: 0 auto 1.5rem; }

.upload-icon-ring {
    position: absolute; inset: 0;
    border: 2px solid var(--blue-400);
    border-radius: 50%; opacity: 0.3;
    animation: ring-expand 3s ease-in-out infinite;
}

@keyframes ring-expand {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 0; }
}

.upload-icon {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--blue-500);
}

.upload-text { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0.5rem; }
.upload-text strong { color: var(--blue-600); }
.upload-formats { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.5px; }

/* Progress */
.progress-container { margin-top: 2rem; }

.progress-info {
    display: flex; justify-content: space-between; margin-bottom: 0.6rem;
    color: var(--text-secondary); font-size: 0.88rem;
}

.progress-bar {
    width: 100%; height: 8px; border-radius: var(--radius-full); overflow: hidden;
    background: var(--bg-subtle);
}

.progress-fill {
    height: 100%; width: 0%; border-radius: var(--radius-full); position: relative;
    background: linear-gradient(90deg, var(--blue-700), var(--blue-500), var(--blue-400));
    box-shadow: 0 0 20px var(--blue-glow);
    transition: width 0.3s ease;
}

.progress-fill::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    animation: progress-shimmer 1.8s ease-in-out infinite;
}

@keyframes progress-shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* Stats */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.75rem; }

.stat-card {
    display: flex; align-items: center; gap: 1rem; padding: 1.25rem;
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-valid { border-left: 3px solid var(--success); }
.stat-invalid { border-left: 3px solid var(--danger); }

.stat-icon { font-size: 1.5rem; }

.stat-value {
    font-size: 2rem; font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
}

.stat-valid .stat-value { color: var(--success); }
.stat-invalid .stat-value { color: var(--danger); }

.stat-label {
    font-size: 0.72rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.8px;
}

/* Live Feed */
#live-feed-section { margin-top: 1.5rem; gap: 1rem; }

.feed-column {
    flex: 1; padding: 1.1rem; border-radius: var(--radius-md);
    font-size: 0.85rem;
}

.feed-column h4 {
    font-size: 0.8rem; margin-bottom: 0.6rem;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 700;
}

.feed-valid { background: var(--success-light); border: 1px solid rgba(16, 185, 129, 0.15); }
.feed-valid h4 { color: var(--success); }
.feed-invalid { background: var(--danger-light); border: 1px solid rgba(239, 68, 68, 0.12); }
.feed-invalid h4 { color: var(--danger); }

#live-valid-list, #live-invalid-list {
    display: flex; flex-direction: column; gap: 0.25rem;
    color: var(--text-body);
}

/* Download */
#download-section { margin-top: 2.25rem; text-align: center; }
.download-title { font-weight: 700; margin-bottom: 1.25rem; font-size: 1.05rem; color: var(--text-heading); }
.download-btns { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* Auth gate */
.auth-gate { text-align: center; padding: 3.5rem 2rem; }
.auth-gate h3 { font-size: 1.35rem; margin-bottom: 0.85rem; font-weight: 700; }
.auth-gate p { color: var(--text-secondary); margin-bottom: 1.75rem; line-height: 1.7; }

/* ======================== RESULT CARD ======================== */
.result-card {
    margin-top: 1.5rem; padding: 1.75rem;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    text-align: left;
    animation: result-enter 0.4s var(--ease-out-expo);
}

@keyframes result-enter {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.result-header {
    display: flex; align-items: center; gap: 0.75rem;
    margin-bottom: 1.25rem; padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.result-icon { font-size: 1.5rem; }
.result-status { font-size: 1.25rem; font-weight: 800; letter-spacing: 1.5px; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }

.result-item {
    display: flex; flex-direction: column; gap: 0.25rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.result-label {
    font-size: 0.68rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.8px; font-weight: 600;
}

.result-value { font-size: 0.93rem; font-weight: 600; color: var(--text-heading); }

.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }

/* ======================== TESTIMONIALS ======================== */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.testimonial-card { padding: 2.25rem; text-align: left; }

.testimonial-stars {
    color: var(--warning); font-size: 0.95rem; margin-bottom: 1rem;
    letter-spacing: 3px;
}

.testimonial-card p {
    font-size: 0.93rem; color: var(--text-secondary);
    line-height: 1.75; margin-bottom: 1.5rem; font-style: italic;
}

.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }

.author-avatar {
    width: 42px; height: 42px; border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-600), var(--indigo));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.78rem; font-weight: 700; color: white;
    box-shadow: 0 4px 12px var(--blue-glow);
}

.testimonial-author strong { display: block; font-size: 0.88rem; color: var(--text-heading); }
.testimonial-author span { font-size: 0.75rem; color: var(--text-muted); }

/* ======================== CTA ======================== */
.cta-section { padding: 6rem 0; }

.cta-card {
    text-align: center; padding: 5.5rem 3rem;
    background: linear-gradient(135deg, var(--blue-700), var(--blue-600), var(--indigo));
    border-radius: var(--radius-2xl);
    position: relative; overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.cta-card::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    opacity: 0.08;
    mix-blend-mode: overlay;
    pointer-events: none;
}

.cta-card h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 1rem; position: relative;
    color: var(--text-white);
}

.cta-card .gradient-text {
    background: linear-gradient(135deg, rgba(255,255,255,1), var(--blue-200));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-card p {
    color: rgba(255, 255, 255, 0.85); font-size: 1.1rem;
    margin-bottom: 2rem; max-width: 550px;
    margin-left: auto; margin-right: auto;
    position: relative; line-height: 1.7;
}

.cta-card .btn-primary {
    background: rgba(255, 255, 255, 0.95);
    color: var(--blue-700);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.cta-card .btn-primary:hover {
    background: var(--text-white);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

/* ======================== FOOTER ======================== */
.footer {
    border-top: 1px solid var(--border-light);
    padding: 4.5rem 0 2rem;
    background: var(--bg-light);
}

.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem; margin-bottom: 3.5rem;
}

.footer-brand .nav-logo { color: var(--text-heading); }
.footer-brand .logo-icon { color: var(--blue-600); filter: none; }
.footer-brand .logo-accent { color: var(--blue-600); }

.footer-brand p {
    color: var(--text-secondary); font-size: 0.88rem;
    margin-top: 1.15rem; line-height: 1.7; max-width: 300px;
}

.footer-col { display: flex; flex-direction: column; gap: 0.65rem; }

.footer-col h4 {
    font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1.5px;
    color: var(--text-muted); margin-bottom: 0.5rem; font-weight: 700;
}

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

.footer-col a:hover { color: var(--blue-600); }

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
    text-align: center;
}

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

/* ======================== REVEALS ======================== */
/* Content is VISIBLE by default — JS adds animation class */
.reveal {
    opacity: 1;
    transform: translateY(0);
}

/* JS adds .js-reveal class to body, then animations kick in */
.js-loaded .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.9s var(--ease-out-expo),
        transform 0.9s var(--ease-out-expo);
}

.js-loaded .reveal.visible { opacity: 1; transform: translateY(0); }
.js-loaded .reveal-delay-1 { transition-delay: 0.12s; }
.js-loaded .reveal-delay-2 { transition-delay: 0.24s; }
.js-loaded .reveal-delay-3 { transition-delay: 0.36s; }

/* ======================== SCROLLBAR ======================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--blue-200); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue-300); }

/* ======================== RESPONSIVE ======================== */

/* Tablet landscape */
@media (max-width: 1024px) {
    .features-grid, .testimonials-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

    .bg-glow-1 {
        width: min(100vw, 700px);
        height: min(100vw, 700px);
    }
}

/* Tablet portrait + large phones */
@media (max-width: 768px) {
    .section { padding: 5rem 0; }
    .section-header { margin-bottom: 3rem; }

    .nav-links, .nav-actions { display: none; }
    .mobile-menu-btn { display: flex; }

    .hero { padding: 9rem 1.5rem 4rem; }
    .hero h1 { font-size: 2.4rem; letter-spacing: -0.5px; }
    .hero-sub { font-size: 1rem; }

    .bg-glow-1 {
        width: 120vw;
        height: 120vw;
        top: -15%;
        filter: blur(30px);
    }

    .bg-glow-2 { opacity: 0.15; }
    .bg-glow-3 { display: none; }

    .trust-bar { gap: 1.5rem; padding: 1.75rem; }
    .trust-divider { display: none; }
    .trust-number { font-size: 1.5rem; }

    .split-grid,
    .features-grid,
    .steps-grid,
    .testimonials-grid,
    .pricing-grid { grid-template-columns: 1fr; }

    .step-line { display: none; }

    .tool-panel { padding: 1.75rem; }
    .input-group { flex-direction: column; }
    .input-group .btn { min-height: 48px; }

    .result-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .cta-card { padding: 3rem 1.5rem; }

    .otp-digit { width: 42px; height: 50px; font-size: 1.2rem; }
    .modal { margin: 0.75rem; padding: 2rem; max-width: 100%; }

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

/* Small phones */
@media (max-width: 480px) {
    .container { padding: 0 1.25rem; }

    .hero h1 { font-size: 2rem; letter-spacing: -0.3px; }
    .hero-sub { font-size: 0.95rem; margin-bottom: 2rem; }
    .hero-badge { font-size: 0.72rem; padding: 0.4rem 1rem; }

    .btn-lg { padding: 0.95rem 2rem; font-size: 0.95rem; }

    .bg-glow-1 {
        width: 150vw;
        height: 150vw;
        top: -20%;
    }

    .trust-bar { padding: 1.25rem; gap: 1rem; }
    .trust-number { font-size: 1.3rem; }
    .trust-item { min-width: 80px; }

    .feature-card, .testimonial-card, .pricing-card,
    .problem-card, .solution-card { padding: 1.5rem; }

    .pricing-price { font-size: 2.5rem; }

    .otp-digit { width: 38px; height: 46px; font-size: 1.1rem; }
    .otp-input-group { gap: 0.4rem; }

    .modal { padding: 1.5rem; border-radius: var(--radius-xl); }
}

/* Landscape phones */
@media (max-height: 500px) and (orientation: landscape) {
    .hero { padding: 6rem 2rem 3rem; }
    .hero h1 { font-size: 2rem; }
    .hero-sub { margin-bottom: 1.5rem; }
    .section { padding: 3rem 0; }

    .bg-glow-1 {
        width: 80vh;
        height: 80vh;
    }
}

/* Ultra-wide / large desktop */
@media (min-width: 1440px) {
    .container { max-width: 1320px; }
    .hero h1 { font-size: 5rem; }

    .bg-glow-1 {
        width: 1000px;
        height: 1000px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .glass-card:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }

    .btn:hover { transform: none; }
    .btn:active { transform: scale(0.98); }

    .feature-card:hover .feature-icon { transform: none; }

    /* Larger touch targets */
    .btn { min-height: 48px; }
    .form-input { min-height: 48px; font-size: 16px; /* Prevent iOS zoom */ }
    .glass-input { min-height: 48px; font-size: 16px; }
    .nav-auth-btn { min-height: 44px; min-width: 44px; }
    .modal-close { min-width: 48px; min-height: 48px; }
}

/* Safe area insets for notched phones */
@supports (padding: max(0px)) {
    .navbar { padding-left: max(1rem, env(safe-area-inset-left)); padding-right: max(1rem, env(safe-area-inset-right)); }
    .mobile-menu { padding-left: max(2rem, env(safe-area-inset-left)); padding-right: max(2rem, env(safe-area-inset-right)); }
    .footer { padding-bottom: max(2rem, env(safe-area-inset-bottom)); }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .bg-glow-1, .bg-glow-2, .bg-glow-3 {
        animation: none !important;
    }
}

/* Print styles */
@media print {
    .bg-glow, .bg-grid, .particles, .lightning-flash,
    .navbar, .mobile-menu, .modal-overlay { display: none !important; }
    body { background: white; color: black; }
    .section { padding: 2rem 0; }
    .hero { padding: 2rem; }
    .hero h1, .hero-sub { color: black !important; text-shadow: none !important; }
}