/* ========== GLOBAL VARIABLES & RESET (Shared with navigation) ========== */
:root {
    --bg: #faf7f2;
    --card-bg: #ffffff;
    --text: #2c2822;
    --text-light: #8b8170;
    --border: #e6ddcc;
    --accent: #c9af86;
    --accent-hover: #c2ad86;
    --nav-bg: rgba(250, 247, 242, 0.94);
    --shadow: 0 4px 16px rgba(0,0,0,0.04);
    --radius: 12px;
    --transition: 0.3s ease;
    --nav-text: #2c2822;
}

/* Dark mode overrides */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1b1915;
        --card-bg: #25221d;
        --text: #e8dfce;
        --text-light: #b3a893;
        --border: #4b4337;
        --accent: #8b775a;
        --accent-hover: #a8906e;
        --nav-bg: rgba(27, 25, 21, 0.94);
        --shadow: 0 4px 16px rgba(0,0,0,0.2);
        --nav-text: #e8dfce;
    }
}

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

body {
    background: var(--bg);
    font-family: 'Crimson Text', 'Georgia', 'Times New Roman', 'Segoe UI', 'Roboto', system-ui, serif;
    padding: 0;
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-image: radial-gradient(circle at 20% 30%, #fdf9f2 0%, #f3ede2 100%);
    background-attachment: fixed;
}

@media (prefers-color-scheme: dark) {
    body {
        background-image: radial-gradient(circle at 20% 30%, #25221c 0%, #17140f 100%);
    }
}

/* ========== NAVIGATION ========== */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 1.5rem;
    width: 100%;
    transition: box-shadow 0.3s;
}
.site-nav.scrolled {
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}
.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 58px;
    gap: 1rem;
}
.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.3px;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.75; }
.nav-logo .logo-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    list-style: none;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.nav-links a {
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 500;
    font-size: 0.88rem;
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
    letter-spacing: 0.1px;
}
.nav-links a:hover,
.nav-links a.active {
    background: rgba(180, 150, 110, 0.12);
    color: var(--accent);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.88rem;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
    letter-spacing: 0.1px;
    user-select: none;
    color: var(--nav-text);
    background: none;
    border: none;
    font-family: inherit;
}
.nav-dropdown-toggle:hover {
    background: rgba(180, 150, 110, 0.12);
    color: var(--accent);
}
.nav-dropdown-toggle .arrow {
    font-size: 0.6rem;
    transition: transform 0.25s;
}
.nav-dropdown.open .nav-dropdown-toggle .arrow { transform: rotate(180deg); }
.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 6px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    padding: 0.5rem 0;
    min-width: 220px;
    max-height: 420px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s, transform 0.22s, visibility 0.22s;
    z-index: 1001;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}
.nav-dropdown.open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.nav-dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    border-radius: 0;
    white-space: nowrap;
    color: var(--nav-text);
    text-decoration: none;
    transition: background 0.15s;
}
.nav-dropdown-menu a:hover {
    background: rgba(180, 150, 110, 0.1);
    color: var(--accent);
}

/* Hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    flex-direction: column;
    gap: 5px;
    z-index: 1002;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 58px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 999;
    padding: 1rem;
    overflow-y: auto;
    flex-direction: column;
    gap: 0.25rem;
}
.mobile-menu.active { display: flex; }
.mobile-menu a {
    display: block;
    padding: 0.7rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--nav-text);
    text-decoration: none;
    border-radius: 10px;
    transition: background 0.2s;
}
.mobile-menu a:hover,
.mobile-menu a.active {
    background: rgba(180, 150, 110, 0.12);
    color: var(--accent);
}
.mobile-menu .mobile-divider { height: 1px; background: var(--border); margin: 0.4rem 0; }
.mobile-menu .mobile-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-light);
    padding: 0.5rem 1rem 0.2rem;
}

/* ========== PAGE SPECIFIC STYLES (Curated) ========== */
.container {
    max-width: 1480px;
    width: 100%;
    margin: 0 auto;
    padding: 2.2rem 1.8rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.volume-marker {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #9b8c76;
    border: 1px solid #d9cdb5;
    padding: 0.3rem 1.8rem;
    margin-bottom: 0.9rem;
    background: rgba(255,255,250,0.5);
    backdrop-filter: blur(4px);
}

h1 {
    font-size: 2.9rem;
    font-weight: 450;
    letter-spacing: 1px;
    color: #3e3629;
    margin-bottom: 0.4rem;
    font-style: italic;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 350;
    border-bottom: 1.5px solid #dbd0bc;
    display: inline-block;
    padding-bottom: 0.55rem;
    padding-left: 1.2rem;
    padding-right: 1.2rem;
    letter-spacing: 0.5px;
    font-style: normal;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
    margin-top: 0.2rem;
}

.palette-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: 0 4px 16px rgba(0,0,0,0.04), 0 1px 4px rgba(0,0,0,0.02);
    overflow: hidden;
    transition: transform var(--transition), box-shadow 0.35s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    position: relative;
}
.palette-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #c9af86, #d9c8a8, #c9af86);
    opacity: 0.5;
}
.palette-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 32px rgba(0,0,0,0.07), 0 3px 10px rgba(0,0,0,0.03);
}

.color-strip {
    display: flex;
    width: 100%;
    height: 105px;
    cursor: pointer;
    margin-top: 4px;
}
.color-swatch {
    flex: 1;
    position: relative;
    transition: filter 0.2s, transform 0.2s;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 7px;
}
.color-swatch:hover {
    filter: brightness(0.9);
    transform: scaleY(1.05);
    z-index: 2;
    box-shadow: 0 5px 14px rgba(0,0,0,0.1);
}
.swatch-hex {
    font-size: 0.62rem;
    font-weight: 500;
    color: rgba(255,255,255,0.92);
    background: rgba(20,20,20,0.38);
    padding: 2px 8px;
    border-radius: 14px;
    letter-spacing: 0.5px;
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    white-space: nowrap;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
}
.color-swatch:hover .swatch-hex { opacity: 1; }
.swatch-hex.light-text {
    color: rgba(30,30,30,0.88);
    background: rgba(255,255,255,0.75);
}

.palette-info {
    padding: 1.2rem 1.25rem 1.1rem 1.25rem;
    background: var(--card-bg);
}
.palette-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.8rem;
}
.palette-name {
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 0.3px;
    color: #3b3327;
    font-style: italic;
    border-bottom: 2px dotted #d9c8a8;
    padding-bottom: 2px;
}
.copy-group-btn {
    background: #f8f4ec;
    border: 1px solid #ddd0b8;
    padding: 0.42rem 1rem;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 500;
    color: #5b5242;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: all 0.25s;
    letter-spacing: 0.3px;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
    background: #fefcf8;
}
.copy-group-btn:hover {
    background: #e7decd;
    border-color: #c2ad86;
    color: #2f281b;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.color-names {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.55rem;
    align-items: center;
    margin-top: 0.2rem;
}
.color-tag {
    font-size: 0.72rem;
    background: #f9f6ef;
    color: #5a5143;
    padding: 0.3rem 0.8rem;
    border-radius: 16px;
    font-weight: 400;
    letter-spacing: 0.2px;
    white-space: nowrap;
    border: 0.5px solid #e4d9c4;
    display: inline-flex;
    align-items: center;
    transition: all 0.2s;
    cursor: pointer;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
    font-style: normal;
}
.color-tag:hover {
    background: #ebe2d1;
    border-color: #cbb590;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.04);
}
.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    opacity: 0.9;
    border: 0.5px solid rgba(0,0,0,0.05);
}

.footer-note {
    margin-top: 3.5rem;
    text-align: center;
    color: #9f9685;
    font-size: 0.85rem;
    font-weight: 350;
    border-top: 1px solid #ddd6c4;
    padding-top: 1.8rem;
    width: 100%;
    max-width: 640px;
    letter-spacing: 0.5px;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
}

.toast-message {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    background: #2d2922;
    color: #f5efe4;
    padding: 0.65rem 2rem;
    border-radius: 40px;
    font-size: 0.82rem;
    font-weight: 450;
    box-shadow: 0 10px 28px rgba(0,0,0,0.18);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.28s ease;
    pointer-events: none;
    white-space: nowrap;
    letter-spacing: 0.4px;
    font-family: 'Segoe UI', 'Roboto', sans-serif;
}
.toast-message.show { opacity: 1; }

/* Dark mode overrides for page elements */
@media (prefers-color-scheme: dark) {
    .palette-name { color: #ece3d3; border-bottom-color: #7a6d56; }
    .color-tag { background: #343028; color: #d7cebb; border-color: #4f4638; }
    .color-tag:hover { background: #453e32; border-color: #7a6d56; }
    .copy-group-btn { background: #312d25; border-color: #514838; color: #d5ccb8; }
    .copy-group-btn:hover { background: #453e32; color: #efe5d2; }
    .volume-marker { color: #b3a48a; border-color: #5b5240; background: rgba(30,30,25,0.5); }
    .footer-note { color: #958c7b; border-top-color: #474031; }
    .palette-card::before { background: linear-gradient(90deg, #8b775a, #ab9a80, #8b775a); }
    .subtitle { color: #b3a893; border-bottom-color: #5b5240; }
    h1 { color: #e8dfce; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .container { padding: 1.5rem 1rem; }
    h1 { font-size: 2.2rem; }
    .palette-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.4rem; }
}
@media (min-width: 769px) {
    .mobile-menu { display: none !important; }
}