/* ============================================================
   EMOTICA — Premium Landing Page Design System
   Theme: Calming Mood Tracker (Lavender + Warm Peach Aurora)
   Compatibility: All devices from 320px to 4K
   ============================================================ */

/* --- Design Tokens --- */
:root {
    --clr-primary: #7C5CFC;
    --clr-primary-light: #A78BFA;
    --clr-primary-dark: #6D28D9;
    --clr-accent: #F472B6;
    --clr-accent-warm: #FBBF24;
    --clr-surface: #FFFFFF;
    --clr-bg: #F8F7FF;
    --clr-bg-alt: #F1EFFB;
    --clr-footer: #0C0A1A;
    --clr-text: #1A1035;
    --clr-text-sub: #6B7280;
    --clr-text-light: #9CA3AF;
    --clr-border: rgba(124, 92, 252, 0.08);
    --clr-glass: rgba(255, 255, 255, 0.72);
    --clr-glass-border: rgba(255, 255, 255, 0.45);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --radius-full: 9999px;
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 4px 12px rgba(124, 92, 252, 0.06);
    --shadow-md: 0 12px 32px -8px rgba(124, 92, 252, 0.15);
    --shadow-lg: 0 24px 64px -12px rgba(124, 92, 252, 0.2);
    --shadow-glow: 0 0 60px rgba(124, 92, 252, 0.25);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
}

ul {
    list-style: none;
}

/* --- Fluid Type Scale --- */
h1 {
    font-size: clamp(2.25rem, 6vw + 0.5rem, 4.25rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.035em;
}

h2 {
    font-size: clamp(1.75rem, 4vw + 0.25rem, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
}

h3 {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    font-weight: 700;
    line-height: 1.35;
}

p,
li {
    font-size: clamp(0.95rem, 1.5vw, 1.0625rem);
}

/* --- Layout --- */
.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

section {
    padding: clamp(4rem, 8vw, 7rem) 0;
}

/* --- Utility --- */
.gradient-text {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.1), rgba(244, 114, 182, 0.08));
    color: var(--clr-primary);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(124, 92, 252, 0.12);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-family: var(--font);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.play-badge {
    display: inline-block;
    transition: var(--transition);
}

.play-badge img {
    height: 60px;
    width: auto;
    display: block;
}

.play-badge:hover {
    transform: translateY(-3px) scale(1.02);
    filter: brightness(1.1);
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn:hover::after {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
    color: #fff;
    box-shadow: 0 8px 24px -4px rgba(109, 40, 217, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.015);
    box-shadow: 0 16px 40px -6px rgba(109, 40, 217, 0.42);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1);
}

.btn-outline {
    background: transparent;
    color: var(--clr-primary);
    border: 2px solid rgba(124, 92, 252, 0.25);
}

.btn-outline:hover {
    background: rgba(124, 92, 252, 0.06);
    border-color: var(--clr-primary);
    transform: translateY(-2px);
}

/* ============================================================
   HEADER
   ============================================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1rem 0;
    transition: var(--transition);
}

header.scrolled {
    background: var(--clr-glass);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--clr-glass-border);
    padding: 0.65rem 0;
    box-shadow: var(--shadow-xs);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--clr-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo img {
    height: 38px;
    width: 38px;
    border-radius: var(--radius-sm);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    text-decoration: none;
    color: var(--clr-text-sub);
    font-weight: 600;
    font-size: 0.92rem;
    transition: color 0.25s ease;
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--clr-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-links a:not(.btn):hover {
    color: var(--clr-primary);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.nav-links .btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.875rem;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--clr-text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle span+span {
    margin-top: 6px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    padding: clamp(7rem, 14vw, 11rem) 0 clamp(4rem, 8vw, 6rem);
    position: relative;
    overflow: hidden;
}

/* Ambient gradient blobs */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.45;
    pointer-events: none;
}

.hero::before {
    width: clamp(300px, 50vw, 700px);
    height: clamp(300px, 50vw, 700px);
    background: radial-gradient(circle, rgba(124, 92, 252, 0.25), transparent 70%);
    top: -10%;
    right: -8%;
}

.hero::after {
    width: clamp(250px, 40vw, 550px);
    height: clamp(250px, 40vw, 550px);
    background: radial-gradient(circle, rgba(244, 114, 182, 0.2), transparent 70%);
    bottom: -5%;
    left: -5%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    margin-bottom: 1.5rem;
}

.hero-text p {
    color: var(--clr-text-sub);
    max-width: 500px;
    margin-bottom: 2.25rem;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

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

.hero-visual .app-icon-wrapper {
    position: relative;
    width: clamp(200px, 28vw, 300px);
    height: clamp(200px, 28vw, 300px);
}

.hero-visual .app-icon-wrapper::before {
    content: '';
    position: absolute;
    inset: -15%;
    border-radius: 50%;
    background: var(--shadow-glow);
    animation: pulse-glow 4s ease-in-out infinite;
}

.hero-visual .app-icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 64px;
    position: relative;
    z-index: 1;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-16px) rotate(1deg);
    }
}

@keyframes pulse-glow {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.4;
    }

    50% {
        transform: scale(1.08);
        opacity: 0.65;
    }
}

/* --- Floating mood emojis (decorative) --- */
.mood-float {
    position: absolute;
    font-size: 1.5rem;
    opacity: 0;
    pointer-events: none;
    z-index: 0;
}

.mood-float.mf-1 {
    top: 10%;
    left: 5%;
    animation: moodDrift 8s 0s ease-in-out infinite;
}

.mood-float.mf-2 {
    top: 70%;
    right: 8%;
    animation: moodDrift 9s 2s ease-in-out infinite;
}

.mood-float.mf-3 {
    bottom: 15%;
    left: 12%;
    animation: moodDrift 7s 1s ease-in-out infinite;
}

.mood-float.mf-4 {
    top: 25%;
    right: 15%;
    animation: moodDrift 10s 3s ease-in-out infinite;
}

@keyframes moodDrift {
    0% {
        transform: translateY(20px) scale(0.8);
        opacity: 0;
    }

    20% {
        opacity: 0.6;
    }

    50% {
        transform: translateY(-10px) scale(1);
        opacity: 0.4;
    }

    80% {
        opacity: 0.6;
    }

    100% {
        transform: translateY(20px) scale(0.8);
        opacity: 0;
    }
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
    padding: clamp(2rem, 4vw, 3rem) 0;
    background: var(--clr-surface);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    text-align: center;
}

.stat-item h3 {
    color: var(--clr-primary);
    margin-bottom: 0.25rem;
}

.stat-item p {
    color: var(--clr-text-sub);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
    background: var(--clr-surface);
}

.features-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto clamp(3rem, 5vw, 4.5rem);
}

.features-header p {
    color: var(--clr-text-sub);
    margin-top: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.25rem, 2.5vw, 2rem);
}

.feature-card {
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
    opacity: 0;
    transition: opacity 0.35s ease;
}

.feature-card:hover {
    background: var(--clr-surface);
    border-color: rgba(124, 92, 252, 0.15);
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.08), rgba(244, 114, 182, 0.06));
    border: 1px solid rgba(124, 92, 252, 0.08);
}

.feature-card h3 {
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: var(--clr-text-sub);
    line-height: 1.65;
}

/* ============================================================
   PHILOSOPHY / ABOUT
   ============================================================ */
.philosophy {
    background: var(--clr-bg-alt);
    position: relative;
    overflow: hidden;
}

.philosophy::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(124, 92, 252, 0.06), transparent 70%);
    top: -20%;
    right: -10%;
    pointer-events: none;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(3rem, 6vw, 5rem);
    align-items: center;
}

.philosophy-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.philosophy-badge {
    width: clamp(180px, 22vw, 260px);
    height: clamp(180px, 22vw, 260px);
    background: var(--clr-surface);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.philosophy-badge img {
    width: 65%;
    border-radius: 30%;
}

.philosophy-badge::after {
    content: '';
    position: absolute;
    inset: -8px;
    border: 2px dashed rgba(124, 92, 252, 0.15);
    border-radius: calc(var(--radius-xl) + 8px);
}

.philosophy-text h2 {
    margin-bottom: 1.25rem;
}

.philosophy-text>p {
    color: var(--clr-text-sub);
    margin-bottom: 2rem;
    line-height: 1.75;
}

.check-list {
    margin-bottom: 2.25rem;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.5rem 0;
}

.check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
    font-weight: 900;
    flex-shrink: 0;
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
    background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
    color: #fff;
    text-align: center;
    padding: clamp(4rem, 8vw, 6rem) 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -40%;
    right: -10%;
    pointer-events: none;
}

.cta h2 {
    color: #fff;
    margin-bottom: 1rem;
}

.cta p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 500px;
    margin: 0 auto 2rem;
}

.cta .btn-cta {
    background: #fff;
    color: var(--clr-primary-dark);
    font-weight: 800;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-full);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
}

.cta .btn-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
    background: var(--clr-footer);
    color: #fff;
    padding: clamp(3rem, 6vw, 5rem) 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: clamp(2rem, 4vw, 4rem);
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--clr-text-light);
    font-size: 0.9rem;
    max-width: 280px;
    line-height: 1.65;
}

.footer-col h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-text-light);
    margin-bottom: 1.25rem;
    font-weight: 700;
}

.footer-col a {
    display: block;
    color: #94A3B8;
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.3rem 0;
    transition: color 0.25s ease;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: #475569;
    font-size: 0.82rem;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a {
    color: #475569;
    font-size: 0.82rem;
    text-decoration: none;
    transition: color 0.25s ease;
}

.footer-bottom-links a:hover {
    color: var(--clr-primary-light);
}

/* ============================================================
   LEGAL PAGES
   ============================================================ */
.legal-hero {
    padding: clamp(7rem, 12vw, 10rem) 0 clamp(2rem, 4vw, 3rem);
    background: linear-gradient(180deg, var(--clr-bg-alt), var(--clr-bg));
    text-align: center;
}

.legal-hero .section-label {
    margin-bottom: 1rem;
}

.legal-hero h1 {
    margin-bottom: 0.75rem;
}

.legal-hero .legal-meta {
    color: var(--clr-text-sub);
    font-size: 0.9rem;
}

.legal-body {
    padding: clamp(2rem, 4vw, 3.5rem) 0 clamp(3rem, 6vw, 5rem);
}

.legal-content {
    max-width: 780px;
    margin: 0 auto;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: clamp(2rem, 4vw, 3.5rem);
    box-shadow: var(--shadow-sm);
}

.legal-content h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 2.25rem 0 0.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--clr-border);
    color: var(--clr-text);
}

.legal-content h2:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 1.5rem;
}

.legal-content p {
    color: var(--clr-text-sub);
    margin-bottom: 1rem;
    line-height: 1.75;
}

.legal-content ul {
    padding-left: 1.25rem;
    margin-bottom: 1rem;
}

.legal-content li {
    color: var(--clr-text-sub);
    margin-bottom: 0.5rem;
    line-height: 1.65;
    list-style: disc;
}

.legal-content strong {
    color: var(--clr-text);
}

.legal-content a {
    color: var(--clr-primary);
    text-decoration: underline;
}

/* ============================================================
   RESPONSIVE — Tablet
   ============================================================ */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-text {
        order: 2;
    }

    .hero-visual {
        order: 1;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .philosophy-visual {
        order: 1;
    }

    .philosophy-text {
        order: 2;
    }

    .check-list {
        display: inline-block;
        text-align: left;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        margin: 1rem auto 0;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
}

/* ============================================================
   RESPONSIVE — Mobile
   ============================================================ */
@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    /* Mobile menu open state */
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--clr-surface);
        border-bottom: 1px solid var(--clr-border);
        padding: 1.5rem;
        gap: 1rem;
        box-shadow: var(--shadow-md);
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .hero-visual .app-icon-wrapper {
        width: 180px;
        height: 180px;
    }

    .hero-visual .app-icon-wrapper img {
        border-radius: 44px;
    }

    .mood-float {
        display: none;
    }
}

/* ============================================================
   RESPONSIVE — Small phones
   ============================================================ */
@media (max-width: 380px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

/* ============================================================
   ACCESSIBILITY & MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--clr-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Print */
@media print {

    header,
    footer,
    .cta,
    .hero::before,
    .hero::after {
        display: none;
    }

    body {
        background: #fff;
        color: #000;
    }

    .legal-content {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}