/* Theme: Сланец — industrial dark grey + orange */
[data-theme="slate"] {
    --bg: #111318;
    --bg-elevated: #1a1d24;
    --bg-card: rgba(255, 255, 255, 0.04);
    --border: rgba(148, 163, 184, 0.18);
    --gold: #f97316;
    --gold-light: #fb923c;
    --green: #94a3b8;
    --text: #f1f5f9;
    --text-muted: rgba(241, 245, 249, 0.68);
    --text-dim: rgba(241, 245, 249, 0.42);
    --cta: #f97316;
    --cta-hover: #fb923c;
    --cta-text: #111318;
    --header-bg: rgba(17, 19, 24, 0.94);
    --nav-mobile-bg: rgba(17, 19, 24, 0.98);
    --hero-overlay: linear-gradient(135deg, rgba(17, 19, 24, 0.93) 0%, rgba(17, 19, 24, 0.68) 50%, rgba(17, 19, 24, 0.88) 100%);
    --hero-glow: rgba(249, 115, 22, 0.1);
    --gallery-fade: rgba(17, 19, 24, 0.88);
    --input-bg: rgba(0, 0, 0, 0.3);
    --accent-soft: rgba(249, 115, 22, 0.1);
    --accent-soft-hover: rgba(249, 115, 22, 0.14);
    --card-hover-border: rgba(249, 115, 22, 0.35);
    --card-hover-bg: rgba(255, 255, 255, 0.05);
    --success-bg: rgba(148, 163, 184, 0.12);
    --success-border: rgba(148, 163, 184, 0.28);
    --theme-swatch-1: #111318;
    --theme-swatch-2: #f97316;
    --theme-swatch-3: #64748b;
}

/* Theme: Мрамор — light elegant cream */
[data-theme="marble"] {
    --bg: #f8f6f2;
    --bg-elevated: #efebe4;
    --bg-card: rgba(255, 255, 255, 0.72);
    --border: rgba(26, 26, 24, 0.1);
    --gold: #8b7355;
    --gold-light: #a08b6d;
    --green: #5c7a5c;
    --text: #1a1a18;
    --text-muted: rgba(26, 26, 24, 0.68);
    --text-dim: rgba(26, 26, 24, 0.45);
    --cta: #8b7355;
    --cta-hover: #a08b6d;
    --cta-text: #ffffff;
    --header-bg: rgba(248, 246, 242, 0.94);
    --nav-mobile-bg: rgba(248, 246, 242, 0.98);
    --hero-overlay: linear-gradient(135deg, rgba(248, 246, 242, 0.88) 0%, rgba(248, 246, 242, 0.55) 50%, rgba(248, 246, 242, 0.82) 100%);
    --hero-glow: rgba(139, 115, 85, 0.12);
    --gallery-fade: rgba(26, 26, 24, 0.72);
    --input-bg: rgba(255, 255, 255, 0.85);
    --accent-soft: rgba(139, 115, 85, 0.1);
    --accent-soft-hover: rgba(139, 115, 85, 0.14);
    --card-hover-border: rgba(139, 115, 85, 0.35);
    --card-hover-bg: rgba(255, 255, 255, 0.9);
    --success-bg: rgba(92, 122, 92, 0.12);
    --success-border: rgba(92, 122, 92, 0.28);
    --theme-swatch-1: #f8f6f2;
    --theme-swatch-2: #8b7355;
    --theme-swatch-3: #5c7a5c;
}

[data-theme="marble"] .header.scrolled {
    border-bottom-color: rgba(26, 26, 24, 0.08);
}

[data-theme="marble"] .burger span {
    background: var(--text);
}

/* Theme: Гранит — charcoal + copper */
[data-theme="granite"] {
    --bg: #1c1c1e;
    --bg-elevated: #2a2a2d;
    --bg-card: rgba(255, 255, 255, 0.04);
    --border: rgba(180, 130, 90, 0.16);
    --gold: #b4825a;
    --gold-light: #c9956a;
    --green: #7a8f7a;
    --text: #eceae6;
    --text-muted: rgba(236, 234, 230, 0.68);
    --text-dim: rgba(236, 234, 230, 0.42);
    --cta: #b4825a;
    --cta-hover: #c9956a;
    --cta-text: #1c1c1e;
    --header-bg: rgba(28, 28, 30, 0.94);
    --nav-mobile-bg: rgba(28, 28, 30, 0.98);
    --hero-overlay: linear-gradient(135deg, rgba(28, 28, 30, 0.92) 0%, rgba(28, 28, 30, 0.66) 50%, rgba(28, 28, 30, 0.86) 100%);
    --hero-glow: rgba(180, 130, 90, 0.12);
    --gallery-fade: rgba(28, 28, 30, 0.86);
    --input-bg: rgba(0, 0, 0, 0.28);
    --accent-soft: rgba(180, 130, 90, 0.1);
    --accent-soft-hover: rgba(180, 130, 90, 0.14);
    --card-hover-border: rgba(180, 130, 90, 0.35);
    --card-hover-bg: rgba(255, 255, 255, 0.05);
    --success-bg: rgba(122, 143, 122, 0.14);
    --success-border: rgba(122, 143, 122, 0.3);
    --theme-swatch-1: #1c1c1e;
    --theme-swatch-2: #b4825a;
    --theme-swatch-3: #7a8f7a;
}

/* Theme: Песчаник — warm earth terracotta */
[data-theme="sandstone"] {
    --bg: #2a2218;
    --bg-elevated: #3a3026;
    --bg-card: rgba(255, 255, 255, 0.04);
    --border: rgba(210, 160, 110, 0.18);
    --gold: #d4a06a;
    --gold-light: #e0b07e;
    --green: #a89068;
    --text: #f5ede3;
    --text-muted: rgba(245, 237, 227, 0.7);
    --text-dim: rgba(245, 237, 227, 0.44);
    --cta: #c87840;
    --cta-hover: #d88850;
    --cta-text: #2a2218;
    --header-bg: rgba(42, 34, 24, 0.94);
    --nav-mobile-bg: rgba(42, 34, 24, 0.98);
    --hero-overlay: linear-gradient(135deg, rgba(42, 34, 24, 0.91) 0%, rgba(42, 34, 24, 0.62) 50%, rgba(42, 34, 24, 0.85) 100%);
    --hero-glow: rgba(212, 160, 106, 0.14);
    --gallery-fade: rgba(42, 34, 24, 0.85);
    --input-bg: rgba(0, 0, 0, 0.22);
    --accent-soft: rgba(212, 160, 106, 0.1);
    --accent-soft-hover: rgba(212, 160, 106, 0.15);
    --card-hover-border: rgba(212, 160, 106, 0.35);
    --card-hover-bg: rgba(255, 255, 255, 0.05);
    --success-bg: rgba(168, 144, 104, 0.14);
    --success-border: rgba(168, 144, 104, 0.3);
    --theme-swatch-1: #2a2218;
    --theme-swatch-2: #c87840;
    --theme-swatch-3: #d4a06a;
}

/* Theme: Галька — deep ocean teal */
[data-theme="ocean"] {
    --bg: #0f1a1f;
    --bg-elevated: #162428;
    --bg-card: rgba(255, 255, 255, 0.04);
    --border: rgba(120, 190, 190, 0.16);
    --gold: #6ec4c4;
    --gold-light: #8ed8d8;
    --green: #5a9e9e;
    --text: #e8f2f2;
    --text-muted: rgba(232, 242, 242, 0.68);
    --text-dim: rgba(232, 242, 242, 0.42);
    --cta: #4aaaaa;
    --cta-hover: #5cbcbc;
    --cta-text: #0f1a1f;
    --header-bg: rgba(15, 26, 31, 0.94);
    --nav-mobile-bg: rgba(15, 26, 31, 0.98);
    --hero-overlay: linear-gradient(135deg, rgba(15, 26, 31, 0.92) 0%, rgba(15, 26, 31, 0.64) 50%, rgba(15, 26, 31, 0.86) 100%);
    --hero-glow: rgba(110, 196, 196, 0.12);
    --gallery-fade: rgba(15, 26, 31, 0.86);
    --input-bg: rgba(0, 0, 0, 0.28);
    --accent-soft: rgba(110, 196, 196, 0.1);
    --accent-soft-hover: rgba(110, 196, 196, 0.14);
    --card-hover-border: rgba(110, 196, 196, 0.35);
    --card-hover-bg: rgba(255, 255, 255, 0.05);
    --success-bg: rgba(90, 158, 158, 0.14);
    --success-border: rgba(90, 158, 158, 0.3);
    --theme-swatch-1: #0f1a1f;
    --theme-swatch-2: #6ec4c4;
    --theme-swatch-3: #5a9e9e;
}

/* Theme option swatch inline vars */
.theme-option[data-theme="forest"] { --swatch-1: #0f1410; --swatch-2: #c9a96e; --swatch-3: #8fad7a; }
.theme-option[data-theme="slate"] { --swatch-1: #111318; --swatch-2: #f97316; --swatch-3: #64748b; }
.theme-option[data-theme="marble"] { --swatch-1: #f8f6f2; --swatch-2: #8b7355; --swatch-3: #5c7a5c; }
.theme-option[data-theme="granite"] { --swatch-1: #1c1c1e; --swatch-2: #b4825a; --swatch-3: #7a8f7a; }
.theme-option[data-theme="sandstone"] { --swatch-1: #2a2218; --swatch-2: #c87840; --swatch-3: #d4a06a; }
.theme-option[data-theme="ocean"] { --swatch-1: #0f1a1f; --swatch-2: #6ec4c4; --swatch-3: #5a9e9e; }