/* ============================================
   ppuzzle.works - Neomorphic Puzzle Workshop
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --clay: #E8DCC8;
    --dark-earth: #3A2E22;
    --rich-soil: #5C4A3A;
    --terracotta: #C4663A;
    --olive: #6B7A4E;
    --deep-loam: #2A1F16;

    --sidebar-width: 280px;

    --font-display: 'IBM Plex Mono', monospace;
    --font-body: 'Inter', sans-serif;

    --neo-light: rgba(255, 255, 255, 0.35);
    --neo-dark: rgba(42, 31, 22, 0.25);
    --neo-bg: #ddd0bc;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    font-weight: 400;
    color: var(--rich-soil);
    background-color: var(--clay);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* --- Grain Overlay --- */
#grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* --- Sidebar --- */
#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--deep-loam);
    color: var(--clay);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

#sidebar-header {
    padding: 32px 24px 24px;
    border-bottom: 1px solid rgba(232, 220, 200, 0.1);
}

#logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--clay);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--terracotta);
}

#sidebar-tagline {
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: rgba(232, 220, 200, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 4px;
}

#sidebar-nav {
    flex: 1;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-section-label {
    font-family: var(--font-display);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(232, 220, 200, 0.35);
    padding: 16px 12px 8px;
}

.sidebar-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 12px;
    background: transparent;
    color: rgba(232, 220, 200, 0.7);
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: left;
}

.sidebar-btn:hover {
    background: rgba(232, 220, 200, 0.08);
    color: var(--clay);
}

.sidebar-btn.active {
    background: rgba(196, 102, 58, 0.2);
    color: var(--terracotta);
    box-shadow:
        inset 2px 2px 4px rgba(0, 0, 0, 0.3),
        inset -1px -1px 3px rgba(232, 220, 200, 0.05);
}

.sidebar-icon {
    flex-shrink: 0;
    fill: currentColor;
    stroke: currentColor;
}

.sidebar-btn .sidebar-icon rect,
.sidebar-btn .sidebar-icon polygon {
    fill: currentColor;
}

#sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(232, 220, 200, 0.1);
}

.sidebar-footer-text {
    font-family: var(--font-display);
    font-size: 0.65rem;
    color: rgba(232, 220, 200, 0.3);
    letter-spacing: 0.05em;
}

/* --- Main Content --- */
#main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
}

/* --- Hero Section --- */
#hero {
    padding: 80px 60px 60px;
    background: linear-gradient(135deg, var(--clay) 0%, var(--neo-bg) 100%);
    position: relative;
}

.hero-inner {
    max-width: 720px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    color: var(--dark-earth);
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-description {
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--rich-soil);
    line-height: 1.65;
    margin-bottom: 32px;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Neomorphic Buttons --- */
.neo-btn {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 14px 28px;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.neo-btn-primary {
    background: var(--clay);
    color: var(--terracotta);
    box-shadow:
        6px 6px 14px var(--neo-dark),
        -6px -6px 14px var(--neo-light);
}

.neo-btn-primary:hover {
    box-shadow:
        3px 3px 8px var(--neo-dark),
        -3px -3px 8px var(--neo-light);
    transform: translateY(-1px);
}

.neo-btn-primary:active {
    box-shadow:
        inset 3px 3px 6px var(--neo-dark),
        inset -3px -3px 6px var(--neo-light);
    transform: translateY(0);
}

.neo-btn-secondary {
    background: var(--clay);
    color: var(--olive);
    box-shadow:
        6px 6px 14px var(--neo-dark),
        -6px -6px 14px var(--neo-light);
}

.neo-btn-secondary:hover {
    box-shadow:
        3px 3px 8px var(--neo-dark),
        -3px -3px 8px var(--neo-light);
    transform: translateY(-1px);
}

.neo-btn-secondary:active {
    box-shadow:
        inset 3px 3px 6px var(--neo-dark),
        inset -3px -3px 6px var(--neo-light);
    transform: translateY(0);
}

/* --- Wave Dividers --- */
.wave-divider {
    width: 100%;
    line-height: 0;
    margin: -1px 0;
    position: relative;
    background: linear-gradient(135deg, var(--clay) 0%, var(--neo-bg) 100%);
}

.wave-divider svg {
    width: 100%;
    height: 60px;
    display: block;
}

.wave-divider-alt svg path {
    fill: var(--neo-bg);
}

.wave-divider-alt {
    background: var(--clay);
}

/* --- Content Sections --- */
.content-section {
    padding: 60px 60px 80px;
    background: var(--clay);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    font-weight: 600;
    color: var(--dark-earth);
    margin-bottom: 36px;
}

/* --- Puzzle Grid --- */
.puzzle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.puzzle-card {
    border-radius: 20px 8px 20px 8px;
    background: var(--clay);
    box-shadow:
        8px 8px 18px var(--neo-dark),
        -8px -8px 18px var(--neo-light);
    transition: all 0.35s ease;
    overflow: hidden;
}

.puzzle-card:hover {
    box-shadow:
        4px 4px 10px var(--neo-dark),
        -4px -4px 10px var(--neo-light);
    transform: translateY(-3px);
}

.puzzle-card-inner {
    padding: 28px 24px;
}

.puzzle-card-icon {
    margin-bottom: 16px;
}

.puzzle-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--olive);
    background: rgba(107, 122, 78, 0.12);
    padding: 4px 10px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.puzzle-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-earth);
    margin-bottom: 8px;
}

.puzzle-desc {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--rich-soil);
    line-height: 1.6;
    margin-bottom: 16px;
}

.puzzle-meta {
    display: flex;
    gap: 16px;
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: rgba(92, 74, 58, 0.6);
}

.puzzle-difficulty {
    color: var(--terracotta);
    font-weight: 600;
}

/* --- Workshop Stats --- */
.workshop-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 24px;
}

.stat-card {
    padding: 28px 24px;
    border-radius: 16px;
    text-align: center;
}

.neo-inset {
    background: var(--clay);
    box-shadow:
        inset 4px 4px 10px var(--neo-dark),
        inset -4px -4px 10px var(--neo-light);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--terracotta);
    margin-bottom: 4px;
}

.stat-label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--rich-soil);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* --- Activity List --- */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    border-radius: 12px;
    background: var(--clay);
    box-shadow:
        4px 4px 10px var(--neo-dark),
        -4px -4px 10px var(--neo-light);
    margin-bottom: 16px;
    transition: all 0.3s ease;
}

.activity-item:hover {
    box-shadow:
        2px 2px 6px var(--neo-dark),
        -2px -2px 6px var(--neo-light);
}

.activity-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--terracotta);
    margin-top: 6px;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-text {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--rich-soil);
    line-height: 1.5;
}

.activity-text strong {
    color: var(--dark-earth);
    font-weight: 600;
}

.activity-time {
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: rgba(92, 74, 58, 0.5);
    margin-top: 4px;
    display: block;
}

/* --- Slide Reveal Animation --- */
.slide-reveal {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-reveal.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Stagger the reveal timing for cards in sequence */
.puzzle-card.slide-reveal:nth-child(2) {
    transition-delay: 0.1s;
}
.puzzle-card.slide-reveal:nth-child(3) {
    transition-delay: 0.2s;
}
.puzzle-card.slide-reveal:nth-child(4) {
    transition-delay: 0.3s;
}
.puzzle-card.slide-reveal:nth-child(5) {
    transition-delay: 0.4s;
}
.puzzle-card.slide-reveal:nth-child(6) {
    transition-delay: 0.5s;
}

.activity-item.slide-reveal:nth-child(2) {
    transition-delay: 0.08s;
}
.activity-item.slide-reveal:nth-child(3) {
    transition-delay: 0.16s;
}
.activity-item.slide-reveal:nth-child(4) {
    transition-delay: 0.24s;
}
.activity-item.slide-reveal:nth-child(5) {
    transition-delay: 0.32s;
}

/* --- Footer --- */
#footer {
    padding: 40px 60px;
    border-top: 1px solid rgba(92, 74, 58, 0.1);
    background: var(--clay);
}

.footer-inner {
    text-align: center;
}

.footer-text {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--dark-earth);
    font-weight: 600;
}

.footer-sub {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: rgba(92, 74, 58, 0.5);
    margin-top: 4px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    #sidebar {
        width: 220px;
    }
    :root {
        --sidebar-width: 220px;
    }
    .content-section {
        padding: 40px 32px 60px;
    }
    #hero {
        padding: 60px 32px 40px;
    }
    #footer {
        padding: 32px;
    }
}

@media (max-width: 680px) {
    #sidebar {
        position: relative;
        width: 100%;
        height: auto;
        max-height: none;
    }
    #main-content {
        margin-left: 0;
    }
    body {
        flex-direction: column;
    }
    #sidebar-nav {
        flex-direction: row;
        flex-wrap: wrap;
        padding: 12px;
        gap: 6px;
    }
    .sidebar-section-label {
        width: 100%;
        padding: 8px 8px 4px;
    }
    .sidebar-btn {
        padding: 8px 14px;
        font-size: 0.75rem;
    }
    #sidebar-footer {
        display: none;
    }
    .puzzle-grid {
        grid-template-columns: 1fr;
    }
    .workshop-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .content-section {
        padding: 32px 20px 48px;
    }
    #hero {
        padding: 40px 20px 32px;
    }
    #footer {
        padding: 24px 20px;
    }
}