/* ============================================
   INVX — Pure Value, Zero Numbers
   Design: Superhuman meets Linear
   ============================================ */

:root {
    /* INVX Brand Colors - Darker, More Professional */
    --brand: #14b8a6;
    --brand-dark: #0d9488;
    --brand-light: #2dd4bf;

    /* Legacy aqua variables for compatibility */
    --aqua-50: #ecfeff;
    --aqua-100: #cffafe;
    --aqua-200: #a5f3fc;
    --aqua-300: #67e8f9;
    --aqua-400: #22d3ee;
    --aqua-500: #06b6d4;
    --aqua-600: #0891b2;
    --aqua-700: #0e7490;
    --aqua-800: #155e75;

    --brand-glow: #67e8f9;

    /* Premium Dark Palette */
    --black: #000000;
    --slate-950: #020617;
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;

    --white: #e2e8f0; /* Darker white for better readability */

    /* Apple System Font Stack - Production Grade */
    --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", system-ui, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", monospace;

    /* Glass morphism */
    --glass-bg: rgba(15, 23, 42, 0.4);
    --glass-border: rgba(6, 182, 212, 0.1);
}

/* === RESET === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Prevent horizontal overflow everywhere */
*,
*::before,
*::after {
    max-width: 100%;
}

/* Allow SVGs and images to scale */
svg,
img {
    max-width: 100%;
    height: auto;
}

/* Better word breaking for long text */
h1, h2, h3, h4, h5, h6, p {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    /* Mobile optimization: Momentum scrolling on iOS */
    -webkit-overflow-scrolling: touch;
}

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100vw;
    /* Mobile optimization: Prevent pull-to-refresh rubber banding */
    overscroll-behavior-y: none;
    /* Mobile optimization: Hardware acceleration */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* === CANVAS BACKGROUND === */
#neuralCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.26;
    /* Mobile optimization: Use GPU acceleration and prevent repaints */
    will-change: transform;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* === GRAIN TEXTURE === */
.grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 400 400" xmlns="http://www.w3.org/2000/svg"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="1.5" numOctaves="4"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.025"/></svg>');
    /* Mobile optimization: Use GPU acceleration and prevent repaints */
    will-change: transform;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* === CONTAINER === */
.container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
    overflow-x: hidden;
}

/* === HEADER === */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.5rem 0;
    background: transparent;
    backdrop-filter: blur(20px) saturate(120%);
    border-bottom: 1px solid rgba(6, 182, 212, 0.05);
    box-shadow: none;
    /* Mobile optimization: Force GPU layer for sticky header */
    will-change: transform;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-svg-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
}

@keyframes brandGlow {
    0%, 100% {
        filter: drop-shadow(0 0 6px rgba(20, 184, 166, 0.4)) drop-shadow(0 0 12px rgba(20, 184, 166, 0.2));
    }
    50% {
        filter: drop-shadow(0 0 10px rgba(20, 184, 166, 0.6)) drop-shadow(0 0 20px rgba(20, 184, 166, 0.3));
    }
}

.logo-svg {
    filter: drop-shadow(0 0 6px rgba(20, 184, 166, 0.4));
    animation: brandGlow 4s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

/* Particle effects around logo */
.logo-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: radial-gradient(circle, var(--brand-light), transparent);
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
}

.logo-particle-1 {
    top: 10%;
    left: 20%;
    animation: particleFloat1 4s ease-in-out infinite;
}

.logo-particle-2 {
    top: 15%;
    right: 15%;
    animation: particleFloat2 5s ease-in-out infinite 0.5s;
}

.logo-particle-3 {
    bottom: 20%;
    left: 10%;
    animation: particleFloat3 4.5s ease-in-out infinite 1s;
}

.logo-particle-4 {
    bottom: 15%;
    right: 20%;
    animation: particleFloat4 5.5s ease-in-out infinite 1.5s;
}

.logo-particle-5 {
    top: 50%;
    left: 5%;
    animation: particleFloat5 4.8s ease-in-out infinite 2s;
}

.logo-particle-6 {
    top: 50%;
    right: 5%;
    animation: particleFloat6 5.2s ease-in-out infinite 2.5s;
}

/* Particles move in WIDE proportional box frame around logo */
@keyframes particleFloat1 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.8; }
    25% { transform: translate(-25px, -20px); opacity: 0.6; }
    50% { transform: translate(-35px, -30px); opacity: 0.5; }
    75% { transform: translate(-20px, -25px); opacity: 0.4; }
    90% { opacity: 0.2; }
}

@keyframes particleFloat2 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.7; }
    25% { transform: translate(25px, -18px); opacity: 0.6; }
    50% { transform: translate(35px, -30px); opacity: 0.4; }
    75% { transform: translate(28px, -22px); opacity: 0.5; }
    90% { opacity: 0.1; }
}

@keyframes particleFloat3 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.6; }
    25% { transform: translate(-22px, 20px); opacity: 0.5; }
    50% { transform: translate(-30px, 35px); opacity: 0.3; }
    75% { transform: translate(-25px, 28px); opacity: 0.4; }
    90% { opacity: 0.1; }
}

@keyframes particleFloat4 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.8; }
    25% { transform: translate(20px, 22px); opacity: 0.6; }
    50% { transform: translate(32px, 35px); opacity: 0.5; }
    75% { transform: translate(25px, 28px); opacity: 0.5; }
    90% { opacity: 0.2; }
}

@keyframes particleFloat5 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.7; }
    25% { transform: translate(-28px, -5px); opacity: 0.5; }
    50% { transform: translate(-38px, 0); opacity: 0.4; }
    75% { transform: translate(-30px, 5px); opacity: 0.5; }
    90% { opacity: 0.1; }
}

@keyframes particleFloat6 {
    0%, 100% { transform: translate(0, 0); opacity: 0; }
    10% { opacity: 0.6; }
    25% { transform: translate(28px, 5px); opacity: 0.5; }
    50% { transform: translate(38px, 0); opacity: 0.3; }
    75% { transform: translate(30px, -5px); opacity: 0.4; }
    90% { opacity: 0.1; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-2px); }
}

.logo-text {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: var(--white);
    animation: float 4s ease-in-out infinite;
    line-height: 1;
}

.logo-ai {
    font-size: 2rem;
    font-weight: 900;
    color: var(--brand);
    letter-spacing: -0.02em;
}

.status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--brand-light);
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--brand-light);
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(34, 211, 238, 0.15);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 2px rgba(34, 211, 238, 0.15);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
        box-shadow: 0 0 3px rgba(34, 211, 238, 0.2);
    }
}

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.hero-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    transform: translateY(-40px); /* Compensate for header visual weight */
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    margin-bottom: 2rem;
    padding: 0.375rem 1rem;
    background: rgba(20, 184, 166, 0.04);
    border: 1px solid rgba(20, 184, 166, 0.12);
    border-radius: 100px;
    backdrop-filter: blur(12px);
}

@keyframes line-pulse {
    0%, 100% { opacity: 0.5; transform: scaleX(1); }
    50% { opacity: 1; transform: scaleX(1.1); }
}

.hero-kicker .kicker-svg {
    display: block;
    flex-shrink: 0;
}

.hero-kicker .text {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--brand);
    white-space: nowrap;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.025em;
    margin-bottom: 1.75rem;
}

.hero-title .gradient {
    background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand-glow) 50%, var(--aqua-200) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 4px rgba(6, 182, 212, 0.02)) brightness(0.85);
    animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { filter: drop-shadow(0 0 4px rgba(6, 182, 212, 0.02)) brightness(0.85); }
    50% { filter: drop-shadow(0 0 6px rgba(6, 182, 212, 0.03)) brightness(0.9); }
}

.hero-subtitle {
    font-size: clamp(1.0625rem, 2vw, 1.3125rem);
    line-height: 1.5;
    color: rgba(226, 232, 240, 0.85);
    margin-bottom: 4rem;
    font-weight: 400;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.01em;
}

.hide-mobile {
    display: inline;
}

.hero-form {
    max-width: 580px;
    margin: 0 auto;
}

.form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(20, 184, 166, 0.15);
    border-radius: 12px;
    color: var(--white);
    font-size: 1rem;
    font-family: var(--font);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.input:focus {
    outline: none;
    border-color: var(--brand);
    background: rgba(15, 23, 42, 0.7);
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.08), 0 8px 24px rgba(20, 184, 166, 0.12), inset 0 1px 2px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.input::placeholder {
    color: var(--gray-400);
}

.btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    min-height: 44px;
    background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand) 100%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: var(--slate-950);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn:focus-visible {
    outline: 2px solid var(--brand-light);
    outline-offset: 3px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 32px rgba(20, 184, 166, 0.35), 0 0 20px rgba(20, 184, 166, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.btn-arrow {
    font-size: 1.125rem;
    transition: transform 0.25s;
}

.btn:hover .btn-arrow {
    transform: translateX(3px);
}

.form-note {
    font-size: 0.8125rem;
    color: rgba(148, 163, 184, 0.7);
    text-align: center;
    font-weight: 500;
}

.form-note.success {
    color: var(--brand);
}

.form-note.error {
    color: #ef4444;
}

/* === SCROLL INDICATOR === */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    margin-top: 2.5rem;
    opacity: 0.6;
    transition: opacity 0.3s, transform 0.3s;
    cursor: pointer;
}

.scroll-indicator:hover {
    opacity: 1;
    transform: translateY(4px);
}

.scroll-text {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-300);
}

.scroll-arrow {
    color: var(--brand-light);
    filter: drop-shadow(0 0 3px rgba(34, 211, 238, 0.1));
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
        filter: drop-shadow(0 0 3px rgba(34, 211, 238, 0.1));
    }
    50% {
        transform: translateY(8px);
        filter: drop-shadow(0 0 4px rgba(34, 211, 238, 0.15));
    }
}

/* === DIVIDER === */
.divider {
    padding: 1.5rem 0;
}

/* === SECTION === */
.section {
    padding: 8rem 0;
    border-top: 1px solid rgba(20, 184, 166, 0.05);
}

.section-alt {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.2) 0%, transparent 100%);
}

.section-inner {
    max-width: 1000px;
    margin: 0 auto;
}

@keyframes glow-pulse {
    0%, 100% { text-shadow: 0 0 4px rgba(6, 182, 212, 0.08); }
    50% { text-shadow: 0 0 6px rgba(6, 182, 212, 0.12); }
}

.section-label {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 1.5rem;
    animation: glow-pulse 3s ease-in-out infinite;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 3.5rem;
    max-width: 800px;
}

/* === CARDS === */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: 2rem;
}

.card {
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(20, 184, 166, 0.3);
    background: rgba(15, 23, 42, 0.5);
    box-shadow: 0 16px 56px rgba(20, 184, 166, 0.08), 0 0 20px rgba(45, 212, 191, 0.06);
}

.card-visual {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card h4 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.card p {
    color: var(--slate-400);
    line-height: 1.7;
    font-size: 1rem;
}

/* === SOLUTION GRID === */
.solution-grid {
    display: grid;
    gap: 3rem;
}

.solution-item {
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.solution-item:hover {
    border-color: rgba(20, 184, 166, 0.3);
    background: rgba(15, 23, 42, 0.5);
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 16px 56px rgba(20, 184, 166, 0.08), 0 0 20px rgba(45, 212, 191, 0.06);
}

.solution-visual {
    margin-bottom: 2rem;
}

.solution-item h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.solution-item p {
    color: var(--slate-400);
    line-height: 1.8;
    font-size: 1.0625rem;
}

/* === DIFFERENCE LIST === */
.difference-list {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.diff-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

@keyframes marker-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.2); }
    50% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(20, 184, 166, 0.05); }
}

.diff-marker {
    width: 18px;
    height: 18px;
    margin-top: 0.35rem;
    background: linear-gradient(135deg, var(--brand-light), var(--brand));
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
    animation: marker-pulse 4s ease-in-out infinite;
    box-shadow: 0 0 12px rgba(20, 184, 166, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

.diff-marker::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border: 1.5px solid var(--brand);
    border-radius: 50%;
    opacity: 0.25;
}

.diff-content {
    flex: 1;
}

.diff-content h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--white);
    letter-spacing: -0.01em;
}

.diff-content p {
    color: var(--slate-400);
    line-height: 1.8;
    font-size: 1.0625rem;
    max-width: 85%;
}

/* === VALUE PROPOSITION === */
.value-section {
    background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.3) 50%, transparent 100%);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: 3rem;
}

.value-item {
    text-align: center;
    padding: 2rem;
    transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.value-item:hover {
    transform: translateY(-6px);
}

.value-item:hover .value-visual svg {
    filter: drop-shadow(0 4px 12px rgba(20, 184, 166, 0.15));
}

.value-visual {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-item h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.value-item p {
    color: var(--slate-400);
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* === CTA SECTION === */
.cta-section {
    padding: 10rem 0;
}

.cta-inner {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    padding: 4rem 2.5rem;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.02), rgba(34, 211, 238, 0.01));
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: 32px;
    backdrop-filter: blur(24px) saturate(180%);
    box-shadow: 0 8px 48px rgba(6, 182, 212, 0.03), inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.cta-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--gray-200);
    margin-bottom: 2.5rem;
}

/* === FOOTER === */
.footer {
    padding: 5rem 0 3rem;
    border-top: 1px solid rgba(20, 184, 166, 0.05);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
}

.footer-left {
    justify-self: start;
}

.footer-center {
    justify-self: center;
}

.footer-right {
    justify-self: end;
    text-align: right;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.footer-logo-ai {
    color: var(--brand);
    font-weight: 700;
}

.footer-tag {
    font-size: 0.875rem;
    color: var(--gray-300);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    font-size: 0.8125rem;
    color: var(--slate-400);
    text-decoration: none;
    transition: color 0.2s;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.footer-link:hover {
    color: var(--brand-light);
}

.footer-link:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
}

.footer-separator {
    color: var(--gray-500);
    font-size: 0.8125rem;
}

.footer-right p {
    font-size: 0.8125rem;
    color: var(--gray-300);
}

/* === MODAL === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

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

.modal {
    background: var(--gray-800);
    border: 1px solid rgba(20, 184, 166, 0.2);
    border-radius: 16px;
    max-width: 800px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: sticky;
    top: 0;
    right: 0;
    float: right;
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.2);
    color: var(--brand);
    font-size: 2rem;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1.5rem 1.5rem 0 0;
    transition: all 0.2s;
    line-height: 1;
    padding: 0;
}

.modal-close:hover {
    background: rgba(20, 184, 166, 0.2);
    transform: rotate(90deg);
}

.modal-content {
    padding: 2rem 2.5rem 2.5rem;
    clear: both;
}

.modal-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--brand);
}

.modal-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--gray-200);
}

.modal-content p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-300);
    margin-bottom: 1.25rem;
}

.modal-content strong {
    color: var(--gray-200);
    font-weight: 600;
}

.modal-content ul {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--gray-300);
}

.modal-content li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.modal-content .highlight {
    background: rgba(20, 184, 166, 0.1);
    border-left: 3px solid var(--brand);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

/* === SCROLL REVEAL === */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === RESPONSIVE === */

/* Tablet and below (768px) */
@media (max-width: 768px) {

    .container,
    .header-inner,
    .section-inner,
    .footer-inner {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .hide-mobile {
        display: none;
    }

    /* Form improvements */
    .form {
        flex-direction: column;
    }

    .input,
    .btn {
        width: 100%;
        min-height: 48px;
    }

    /* Grid fixes - prevent overflow */
    .cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    /* Spacing optimization */
    .section {
        padding: 4rem 0;
    }

    .cta-section {
        padding: 5rem 0;
    }

    /* Card spacing */
    .card {
        padding: 2rem 1.5rem;
    }

    .solution-item {
        padding: 2rem 1.5rem;
    }

    /* SVG responsive sizing */
    .card-visual svg,
    .solution-visual svg,
    .value-visual svg {
        max-width: 100%;
        height: auto;
    }

    /* Difference list */
    .diff-item {
        gap: 1.25rem;
    }

    .diff-content p {
        max-width: 100%;
    }

    /* Footer mobile layout */
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-left,
    .footer-center,
    .footer-right {
        justify-self: center;
        text-align: center;
    }

    /* Modal adjustments */
    .modal-overlay {
        padding: 1rem;
    }

    .modal {
        margin: 0;
        width: 100%;
        max-height: 90vh;
        border-radius: 12px;
    }

    .modal-close {
        width: 44px;
        height: 44px;
        font-size: 1.75rem;
        margin: 1rem 1rem 0 0;
    }

    .modal-content {
        padding: 1.5rem 1.25rem;
    }

    .modal-content h2 {
        font-size: 1.375rem;
        margin-bottom: 1.25rem;
    }

    .modal-content h3 {
        font-size: 1.0625rem;
        margin-top: 1.5rem;
    }

    .modal-content p {
        font-size: 0.875rem;
    }

    .modal-content ul {
        margin-left: 1.25rem;
    }

    .modal-content .highlight {
        padding: 0.875rem 1.25rem;
        margin: 1.25rem 0;
    }
}

/* Small mobile (480px and below) */
@media (max-width: 480px) {
    /* Container ultra-tight */
    .container,
    .header-inner,
    .section-inner,
    .footer-inner {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    /* Header mobile */
    .header {
        padding: 1rem 0;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .logo-ai {
        font-size: 1.5rem;
    }

    .logo-svg-wrapper {
        width: 44px;
        height: 44px;
    }

    .status {
        font-size: 0.625rem;
        padding: 0.375rem 0.75rem;
    }

    /* Hero mobile optimization */
    .hero {
        padding: 1rem 0;
        min-height: 100vh;
    }

    .hero-inner {
        transform: translateY(-20px);
    }

    .hero-title {
        font-size: clamp(2rem, 10vw, 2.75rem);
        margin-bottom: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2.5rem;
    }

    .hero-kicker {
        margin-bottom: 1.5rem;
        padding: 0.25rem 0.75rem;
    }

    .hero-kicker .text {
        font-size: 0.625rem;
    }

    .hero-kicker .kicker-svg {
        width: 60px;
    }

    .scroll-indicator {
        margin-top: 2rem;
    }

    /* Form mobile */
    .input,
    .btn {
        min-height: 48px;
        font-size: 0.9375rem;
        padding: 0.75rem 1rem;
    }

    .btn {
        padding: 0.75rem 1.25rem;
        justify-content: center;
        width: 100%;
    }

    .btn-text {
        font-size: 0.9375rem;
    }

    .form-note {
        font-size: 0.75rem;
    }

    /* Sections mobile */
    .section {
        padding: 3rem 0;
    }

    .section-label {
        font-size: 0.625rem;
        margin-bottom: 1rem;
    }

    .section-title {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
        margin-bottom: 2rem;
    }

    /* Cards mobile */
    .card {
        padding: 1.75rem 1.25rem;
    }

    .card h4 {
        font-size: 1.25rem;
    }

    .card p {
        font-size: 0.9375rem;
    }

    .card-visual {
        margin-bottom: 1.5rem;
    }

    .card-visual svg {
        width: 90px !important;
        height: 90px !important;
    }

    /* Solution items mobile */
    .solution-item {
        padding: 1.75rem 1.25rem;
    }

    .solution-item h4 {
        font-size: 1.25rem;
    }

    .solution-item p {
        font-size: 0.9375rem;
    }

    .solution-visual {
        margin-bottom: 1.5rem;
    }

    .solution-visual svg {
        max-width: 100%;
        height: auto !important;
    }

    /* Value items mobile */
    .value-item {
        padding: 1.5rem 1rem;
    }

    .value-item h4 {
        font-size: 1.25rem;
    }

    .value-item p {
        font-size: 0.9375rem;
    }

    .value-visual svg {
        max-width: 100%;
        height: auto !important;
    }

    /* Difference list mobile */
    .diff-item {
        gap: 1rem;
    }

    .diff-marker {
        width: 14px;
        height: 14px;
        margin-top: 0.25rem;
    }

    .diff-content h4 {
        font-size: 1.25rem;
        margin-bottom: 0.5rem;
    }

    .diff-content p {
        font-size: 0.9375rem;
    }

    /* CTA mobile */
    .cta-section {
        padding: 3rem 0;
    }

    .cta-inner {
        padding: 2rem 1.25rem;
        border-radius: 20px;
    }

    .cta-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
        margin-bottom: 1rem;
    }

    .cta-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    /* Footer mobile */
    .footer {
        padding: 3rem 0 2rem;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .footer-left,
    .footer-center,
    .footer-right {
        justify-self: center;
        text-align: center;
    }

    .footer-logo {
        font-size: 0.9375rem;
        justify-content: center;
    }

    .footer-tag {
        font-size: 0.8125rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-separator {
        display: none;
    }

    .footer-link {
        font-size: 0.8125rem;
        padding: 0.5rem;
    }

    .footer-right p {
        font-size: 0.75rem;
    }

    /* Modal mobile */
    .modal-overlay {
        padding: 0.5rem;
    }

    .modal {
        max-height: 95vh;
        border-radius: 8px;
    }

    .modal-close {
        width: 44px;
        height: 44px;
        font-size: 1.5rem;
        margin: 0.75rem 0.75rem 0 0;
    }

    .modal-content {
        padding: 1.25rem 1rem;
    }

    .modal-content h2 {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }

    .modal-content h3 {
        font-size: 1rem;
        margin-top: 1.25rem;
    }

    .modal-content p {
        font-size: 0.8125rem;
        line-height: 1.6;
    }

    .modal-content ul {
        margin-left: 1rem;
        font-size: 0.8125rem;
    }

    .modal-content .highlight {
        padding: 0.75rem 1rem;
        margin: 1rem 0;
        font-size: 0.8125rem;
    }
}

/* iPhone SE and very small screens (375px and below) */
@media (max-width: 375px) {
    /* Ultra-compact layout */
    .container,
    .header-inner,
    .section-inner,
    .footer-inner {
        padding-left: 0.875rem;
        padding-right: 0.875rem;
    }

    /* Header ultra-compact */
    .logo-text {
        font-size: 1.375rem;
    }

    .logo-ai {
        font-size: 1.375rem;
    }

    .logo-svg-wrapper {
        width: 40px;
        height: 40px;
    }

    .status {
        font-size: 0.5625rem;
        padding: 0.3rem 0.6rem;
    }

    .status-text {
        letter-spacing: 0.03em;
    }

    /* Hero ultra-compact */
    .hero-title {
        font-size: 1.875rem;
        line-height: 1.1;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
        margin-bottom: 2rem;
    }

    .hero-kicker {
        padding: 0.25rem 0.625rem;
    }

    .hero-kicker .text {
        font-size: 0.5625rem;
    }

    .hero-kicker .kicker-svg {
        width: 50px;
    }

    /* Form ultra-compact */
    .input,
    .btn {
        min-height: 44px;
        font-size: 0.875rem;
        padding: 0.625rem 0.875rem;
    }

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

    .btn-text {
        font-size: 0.875rem;
    }

    /* Sections ultra-compact */
    .section {
        padding: 2.5rem 0;
    }

    .section-title {
        font-size: 1.625rem;
        margin-bottom: 1.75rem;
    }

    /* Cards ultra-compact */
    .card {
        padding: 1.5rem 1rem;
    }

    .card h4 {
        font-size: 1.125rem;
    }

    .card p {
        font-size: 0.875rem;
    }

    .card-visual svg {
        width: 80px !important;
        height: 80px !important;
    }

    /* Solution ultra-compact */
    .solution-item {
        padding: 1.5rem 1rem;
    }

    .solution-item h4 {
        font-size: 1.125rem;
    }

    .solution-item p {
        font-size: 0.875rem;
    }

    /* Value ultra-compact */
    .value-item {
        padding: 1.25rem 0.875rem;
    }

    .value-item h4 {
        font-size: 1.125rem;
    }

    .value-item p {
        font-size: 0.875rem;
    }

    /* Difference ultra-compact */
    .diff-marker {
        width: 12px;
        height: 12px;
    }

    .diff-content h4 {
        font-size: 1.125rem;
    }

    .diff-content p {
        font-size: 0.875rem;
    }

    /* CTA ultra-compact */
    .cta-inner {
        padding: 1.75rem 1rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-subtitle {
        font-size: 0.9375rem;
    }

    /* Footer ultra-compact */
    .footer {
        padding: 2.5rem 0 1.5rem;
    }
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-900);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--brand), var(--brand-dark));
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--brand);
}
/* === LOGO PARTICLE ANIMATIONS (FROM LOGIN SCREEN) === */
@keyframes chartLineUp {
    0% { transform: translateX(-10px) scaleX(0) rotate(-15deg); opacity: 0; }
    15% { transform: translateX(-5px) scaleX(0.5) rotate(-15deg); opacity: 0.1; }
    30% { transform: translateX(5px) scaleX(1) rotate(-15deg); opacity: 0.2; }
    50% { transform: translateX(15px) scaleX(1) rotate(-15deg); opacity: 0.3; }
    70% { transform: translateX(25px) scaleX(1) rotate(-15deg); opacity: 0.2; }
    85% { transform: translateX(30px) scaleX(0.5) rotate(-15deg); opacity: 0.1; }
    100% { transform: translateX(35px) scaleX(0) rotate(-15deg); opacity: 0; }
}

@keyframes chartLineDown {
    0% { transform: translateX(-10px) scaleX(0) rotate(15deg); opacity: 0; }
    15% { transform: translateX(-5px) scaleX(0.5) rotate(15deg); opacity: 0.08; }
    30% { transform: translateX(5px) scaleX(1) rotate(15deg); opacity: 0.15; }
    50% { transform: translateX(15px) scaleX(1) rotate(15deg); opacity: 0.2; }
    70% { transform: translateX(25px) scaleX(1) rotate(15deg); opacity: 0.15; }
    85% { transform: translateX(30px) scaleX(0.5) rotate(15deg); opacity: 0.08; }
    100% { transform: translateX(35px) scaleX(0) rotate(15deg); opacity: 0; }
}

@keyframes chartLineHorizontal {
    0% { transform: translateX(-12px) scaleX(0); opacity: 0; }
    20% { transform: translateX(-3px) scaleX(0.3); opacity: 0.05; }
    40% { transform: translateX(8px) scaleX(1); opacity: 0.1; }
    60% { transform: translateX(18px) scaleX(1); opacity: 0.15; }
    80% { transform: translateX(28px) scaleX(0.3); opacity: 0.05; }
    100% { transform: translateX(38px) scaleX(0); opacity: 0; }
}

@keyframes dataPointMove {
    0% { transform: translateX(-5px) scale(0.5); opacity: 0; }
    10% { opacity: 0.2; }
    20% { transform: translateX(3px) scale(1); opacity: 0.3; }
    40% { transform: translateX(10px) scale(1.1); opacity: 0.4; }
    60% { transform: translateX(18px) scale(0.9); opacity: 0.3; }
    80% { transform: translateX(25px) scale(0.8); opacity: 0.2; }
    90% { opacity: 0.1; }
    100% { transform: translateX(33px) scale(0.3); opacity: 0; }
}

@keyframes trailFade {
    0% { transform: scale(1); opacity: 0.15; }
    25% { transform: scale(1.2); opacity: 0.2; }
    50% { transform: scale(0.8); opacity: 0.1; }
    75% { transform: scale(0.6); opacity: 0.05; }
    100% { transform: scale(0.3); opacity: 0; }
}

@keyframes ghostDrift {
    0% { transform: translate(0, 0) scale(0.8); opacity: 0.03; }
    25% { transform: translate(4px, -3px) scale(1); opacity: 0.05; }
    50% { transform: translate(8px, 1px) scale(0.9); opacity: 0.07; }
    75% { transform: translate(11px, -1px) scale(0.7); opacity: 0.04; }
    100% { transform: translate(15px, 0) scale(0.5); opacity: 0.02; }
}

@keyframes candlestickMove {
    0% { transform: translateY(0) scaleY(0.8); opacity: 0.1; }
    25% { transform: translateY(-1px) scaleY(1.2); opacity: 0.2; }
    50% { transform: translateY(1px) scaleY(0.9); opacity: 0.15; }
    75% { transform: translateY(-1px) scaleY(1.1); opacity: 0.2; }
    100% { transform: translateY(0) scaleY(0.8); opacity: 0.1; }
}