/* ===================================
   Groomd Landing Page Styles
   Mobile-first responsive design
   =================================== */

/* CSS Custom Properties */
:root {
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-accent: #4299e1;
    --color-accent-light: #63b3ed;
    --color-snow: #f7fafc;
    --color-ice: #e2e8f0;
    --color-slate: #64748b;
    --color-dark: #0f172a;
    --color-white: #ffffff;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    --transition: 0.3s ease;

    --nav-height: 60px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-snow);
    overflow-x: hidden;
}

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

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

/* ===================================
   Sticky Navigation
   =================================== */
.sticky-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sticky-nav.visible {
    transform: translateY(0);
}

.nav-content {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.nav-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
}

.nav-app-store img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.nav-app-store:hover img {
    transform: scale(1.05);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: url('assets/website_background.png') center center / cover no-repeat fixed;
    text-align: center;
    padding: 2rem;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(15, 23, 42, 0.4) 0%,
        rgba(15, 23, 42, 0.6) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    animation: fadeInUp 1s ease-out;
}

.hero-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.hero h1 {
    font-size: clamp(2.5rem, 10vw, 4rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-size: clamp(1.1rem, 4vw, 1.5rem);
    color: var(--color-ice);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(10px); opacity: 0.3; }
}

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

/* ===================================
   Section Styles
   =================================== */
.section-title {
    font-size: clamp(1.5rem, 5vw, 2.25rem);
    font-weight: 700;
    text-align: center;
    color: var(--color-primary);
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

/* ===================================
   Features Carousel Section
   =================================== */
.features {
    padding: 4rem 0 5rem;
    background: var(--color-white);
    overflow: hidden;
}

.features .section-title {
    padding: 0 1.5rem;
}

.features-carousel-container {
    max-width: 100%;
    margin: 0 auto;
}

.features-carousel {
    overflow: visible;
    position: relative;
}

.features-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-slide {
    min-width: 100%;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 0 2rem;
}

.feature-slide img {
    width: 280px;
    height: auto;
    border-radius: 40px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(0, 0, 0, 0.05);
}

.feature-info {
    text-align: center;
    padding: 2rem 1.5rem 1rem;
    min-height: 120px;
}

.feature-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    transition: opacity 0.3s ease;
}

.feature-desc {
    font-size: 1rem;
    color: var(--color-slate);
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto;
    transition: opacity 0.3s ease;
}

.features-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 0 1.5rem;
}

.carousel-btn {
    width: 48px;
    height: 48px;
    border: none;
    background: var(--color-snow);
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    color: var(--color-primary);
}

.carousel-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.carousel-btn:active {
    transform: scale(0.95);
}

.carousel-btn svg {
    width: 22px;
    height: 22px;
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-ice);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background: var(--color-accent);
    width: 28px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 3rem 1.5rem;
    background: var(--color-dark);
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius-sm);
    opacity: 0.9;
}

.footer-nav {
    margin-bottom: 1.5rem;
}

.footer-nav a {
    color: var(--color-ice);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-nav a:hover {
    color: var(--color-accent-light);
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-slate);
}

/* ===================================
   Responsive Breakpoints
   =================================== */

/* Tablet */
@media (min-width: 768px) {
    .hero-logo {
        width: 120px;
        height: 120px;
    }

    .feature-slide img {
        width: 320px;
    }

    .feature-info {
        padding: 2.5rem 2rem 1.5rem;
    }

    .feature-title {
        font-size: 1.5rem;
    }

    .feature-desc {
        font-size: 1.05rem;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .features {
        padding: 5rem 0 6rem;
    }

    .feature-slide img {
        width: 340px;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .feature-slide img {
        width: 360px;
    }
}

/* ===================================
   Dark Mode
   =================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-primary: #63b3ed;
        --color-primary-light: #90cdf4;
        --color-accent: #4299e1;
        --color-accent-light: #63b3ed;
        --color-snow: #0f172a;
        --color-ice: #1e293b;
        --color-slate: #94a3b8;
        --color-dark: #f8fafc;
        --color-white: #1a202c;
    }

    body {
        background: #0f172a;
        color: #f1f5f9;
    }

    .sticky-nav {
        background: rgba(15, 23, 42, 0.95);
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    }

    .nav-title {
        color: #f1f5f9;
    }

    .section-title {
        color: #f1f5f9;
    }

    .features {
        background: #1a202c;
    }

    .feature-title {
        color: #f1f5f9;
    }

    .feature-desc {
        color: #94a3b8;
    }

    .feature-slide img {
        box-shadow:
            0 25px 50px -12px rgba(0, 0, 0, 0.5),
            0 0 0 1px rgba(255, 255, 255, 0.1);
    }

    .carousel-btn {
        background: #2d3748;
        color: #f1f5f9;
    }

    .carousel-btn:hover {
        background: #4299e1;
        color: #ffffff;
    }

    .carousel-dot {
        background: #4a5568;
    }

    .carousel-dot.active {
        background: #4299e1;
    }

    .footer {
        background: #0a0f1a;
    }

    .footer-nav a {
        color: #94a3b8;
    }

    .footer-nav a:hover {
        color: #63b3ed;
    }

    .copyright {
        color: #64748b;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

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