/* ==========================================================================
   Meh's Lab - Homepage Styles
   Light, airy, and sleek (Apple-like) typography
   ========================================================================== */

:root {
    /* Color System - clean, app-login inspired */
    --bg-deep: #f5f7fb;
    --bg-surface: #ffffff;
    --bg-elevated: #eef2f7;
    --border-soft: rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 16px 50px rgba(15, 23, 42, 0.08);
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    
    --accent-primary: #16a34a;
    --accent-secondary: #6366f1;
    --accent-tertiary: #f59e0b;
    
    /* Project-specific colors */
    --fresh-primary: #16a34a;
    --fresh-glow: rgba(22, 163, 74, 0.08);
    
    --santa-primary: #ef4444;
    --santa-secondary: #b91c1c;
    --santa-glow: rgba(239, 68, 68, 0.08);
    
    --word-primary: #6366f1;
    --word-glow: rgba(99, 102, 241, 0.1);
    
    --photos-primary: #f59e0b;
    --photos-glow: rgba(245, 158, 11, 0.1);
    
    --secondbite-primary: #b13a48;
    --secondbite-glow: rgba(177, 58, 72, 0.12);
    
    --wanderlog-primary: #c67832;
    --wanderlog-glow: rgba(198, 120, 50, 0.12);
    
    /* Typography */
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

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

body {
    font-family: var(--font-body);
    background: radial-gradient(140% 140% at 20% 20%, #eef0ff 0%, #f7f8ff 30%, #f8f9fb 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    max-width: 1180px;
    margin: 0 auto;
    padding: calc(var(--space-4xl) + 1.5rem) var(--space-xl) var(--space-4xl);
}

/* ==========================================================================
   Background Effects
   ========================================================================== */

.noise,
.pattern {
    display: none;
}

/* ==========================================================================
   Header
   ========================================================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 6px 30px rgba(15, 23, 42, 0.06);
}

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

.logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.contact-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-elevated);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.contact-btn:hover {
    background: rgba(15, 23, 42, 0.04);
    border-color: rgba(15, 23, 42, 0.14);
}

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

.hero {
    position: relative;
    min-height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) var(--space-xl) var(--space-3xl);
    z-index: 2;
}

.hero-content {
    max-width: 760px;
    text-align: center;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    margin: 0 auto;
}

h1 {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    color: #0c1a2d;
}

.hero-line {
    display: block;
    color: var(--text-secondary);
    font-size: 0.4em;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.hero-highlight {
    display: block;
    color: var(--accent-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    letter-spacing: -0.01em;
}

.subtle {
    display: block;
    font-size: 0.9em;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--space-sm);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--accent-primary);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: var(--radius-xl);
    color: #0b1220;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s var(--ease-out);
}

.cta-button:hover {
    background: #38e0f7;
    border-color: rgba(34, 211, 238, 0.45);
    transform: translateY(-2px);
}

.cta-button svg {
    animation: bounce-down 2s ease-in-out infinite;
}

@keyframes bounce-down {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

/* ==========================================================================
   Projects Section
   ========================================================================== */

.projects {
    position: relative;
    padding: var(--space-4xl) var(--space-xl);
    z-index: 2;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: #0b1220;
    text-align: center;
    margin-bottom: var(--space-3xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
}

.title-accent {
    color: var(--accent-tertiary);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================================================
   Project Cards
   ========================================================================== */

.project-card {
    position: relative;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-soft);
    transition: all 0.25s var(--ease-out);
    opacity: 1;
    transform: translateY(0);
    box-shadow: var(--shadow-soft);
    animation: card-enter 0.5s var(--ease-out) backwards;
    animation-delay: calc(var(--delay) * 0.1s);
    display: flex;
    flex-direction: column;
}

@keyframes card-enter {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: rgba(15, 23, 42, 0.14);
    box-shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.92));
}

.card-glow {
    display: none;
}

.card-content {
    position: relative;
    padding: var(--space-xl);
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    height: 100%;
}

.card-icon {
    font-size: 2.1rem;
    margin-bottom: var(--space-md);
    width: 56px;
    height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--bg-elevated);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(15,23,42,0.12);
}

.project-card.fresh .card-icon {
    color: var(--fresh-primary);
    background: linear-gradient(145deg, rgba(22,163,74,0.16), rgba(22,163,74,0.04));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(22,163,74,0.18);
}

.project-card.invite .card-icon,
.project-card.settle .card-icon,
.project-card.word .card-icon {
    color: var(--accent-secondary);
    background: linear-gradient(145deg, rgba(99,102,241,0.16), rgba(99,102,241,0.06));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(99,102,241,0.2);
}

.project-card.santa .card-icon {
    color: var(--santa-primary);
    background: linear-gradient(145deg, rgba(239,68,68,0.18), rgba(239,68,68,0.07));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(239,68,68,0.2);
}

.project-card.photos .card-icon {
    color: var(--photos-primary);
    background: linear-gradient(145deg, rgba(245,158,11,0.22), rgba(245,158,11,0.1));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(245,158,11,0.22);
}

.project-card.secondbite .card-icon {
    color: var(--secondbite-primary);
    background: linear-gradient(145deg, rgba(177,58,72,0.18), rgba(177,58,72,0.06));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(177,58,72,0.18);
}

.project-card.secondbite .card-features span {
    background: linear-gradient(145deg, rgba(177,58,72,0.08), rgba(177,58,72,0.02));
    color: #3c1921;
    border-color: rgba(177,58,72,0.16);
}

.project-card.wanderlog .card-icon {
    color: var(--wanderlog-primary);
    background: linear-gradient(145deg, rgba(198,120,50,0.18), rgba(198,120,50,0.06));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 12px 32px rgba(198,120,50,0.18);
}

.project-card.wanderlog .card-features span {
    background: linear-gradient(145deg, rgba(198,120,50,0.08), rgba(198,120,50,0.02));
    color: #3d2610;
    border-color: rgba(198,120,50,0.16);
}


.card-content h3 {
    font-family: var(--font-display);
    font-size: 1.55rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-top: auto;
    margin-bottom: var(--space-lg);
}

.card-features span {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-soft);
    background: linear-gradient(145deg, rgba(255,255,255,0.95), #f7f9fc);
}

.project-card.fresh .card-features span {
    background: linear-gradient(145deg, rgba(22,163,74,0.08), rgba(22,163,74,0.02));
    color: #14532d;
    border-color: rgba(22,163,74,0.12);
}

.project-card.invite .card-features span,
.project-card.settle .card-features span,
.project-card.word .card-features span {
    background: linear-gradient(145deg, rgba(99,102,241,0.08), rgba(99,102,241,0.02));
    color: #1f2a60;
    border-color: rgba(99,102,241,0.12);
}

.project-card.santa .card-features span {
    background: linear-gradient(145deg, rgba(239,68,68,0.09), rgba(239,68,68,0.03));
    color: #7f1d1d;
    border-color: rgba(239,68,68,0.14);
}

.project-card.photos .card-features span {
    background: linear-gradient(145deg, rgba(245,158,11,0.12), rgba(245,158,11,0.04));
    color: #8a4b0a;
    border-color: rgba(245,158,11,0.16);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: var(--space-sm) 0;
    transition: all 0.2s ease;
}

.card-link:hover {
    gap: var(--space-md);
    color: #0f172a;
    text-decoration: underline;
}

.card-locked {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

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

.footer-section {
    position: relative;
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    z-index: 2;
    border-top: 1px solid rgba(15, 23, 42, 0.08);
    margin-top: var(--space-4xl);
}

.made-with {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.heart {
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.footer-note {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

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

@media (max-width: 768px) {
    header {
        padding: var(--space-md);
    }
    
    nav a:not(.contact-btn) {
        display: none;
    }
    
    .hero {
        padding: var(--space-3xl) var(--space-md);
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .hero-line {
        font-size: 0.5em;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .projects {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .project-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .card-features {
        flex-direction: column;
    }
    
    .card-features span {
        text-align: center;
    }
}

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

/* ==========================================================================
   Selection & Focus States
   ========================================================================== */

::selection {
    background: rgba(34, 197, 94, 0.25);
    color: var(--text-primary);
}

:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}