/* ============================================================
   DevHub Themes — Mode (light/dark) + Accent colors
   data-mode="dark|light"  data-accent="blue|violet|emerald|amber|rose|cyan"
   ============================================================ */

/* ---------- Default / Dark mode (baseline already on :root) ---------- */
:root,
html[data-mode="dark"] {
    color-scheme: dark;

    --bg: #070b12;
    --bg-elevated: #0c1220;
    --bg-surface: #111827;
    --bg-surface-2: #1a2234;
    --bg-hover: #1e293b;
    --bg-muted: #0f172a;

    --border: rgba(148, 163, 184, 0.12);
    --border-strong: rgba(148, 163, 184, 0.22);

    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0b1220;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);

    --header-bg: rgba(7, 11, 18, 0.82);
    --card-bg: #0c1220;
    --input-bg: #111827;
    --overlay: rgba(2, 6, 23, 0.65);
    --body-glow-1: rgba(59, 130, 246, 0.08);
    --body-glow-2: rgba(14, 165, 233, 0.05);
}

/* ---------- Light mode ---------- */
html[data-mode="light"] {
    color-scheme: light;

    --bg: #f8fafc;
    --bg-elevated: #ffffff;
    --bg-surface: #ffffff;
    --bg-surface-2: #f1f5f9;
    --bg-hover: #e2e8f0;
    --bg-muted: #f1f5f9;

    --border: rgba(15, 23, 42, 0.1);
    --border-strong: rgba(15, 23, 42, 0.16);

    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #f8fafc;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);

    --header-bg: rgba(255, 255, 255, 0.85);
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --overlay: rgba(15, 23, 42, 0.4);
    --body-glow-1: rgba(59, 130, 246, 0.06);
    --body-glow-2: rgba(14, 165, 233, 0.04);
}

/* ---------- Accent: Blue (default) ---------- */
:root,
html[data-accent="blue"] {
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-soft: #60a5fa;
    --accent-glow: rgba(59, 130, 246, 0.22);
    --accent-muted: rgba(59, 130, 246, 0.12);
    --border-focus: rgba(59, 130, 246, 0.55);
    --accent-contrast: #ffffff;
}

/* ---------- Accent: Violet ---------- */
html[data-accent="violet"] {
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --accent-soft: #a78bfa;
    --accent-glow: rgba(139, 92, 246, 0.24);
    --accent-muted: rgba(139, 92, 246, 0.14);
    --border-focus: rgba(139, 92, 246, 0.55);
    --accent-contrast: #ffffff;
}

/* ---------- Accent: Emerald ---------- */
html[data-accent="emerald"] {
    --accent: #10b981;
    --accent-hover: #059669;
    --accent-soft: #34d399;
    --accent-glow: rgba(16, 185, 129, 0.22);
    --accent-muted: rgba(16, 185, 129, 0.12);
    --border-focus: rgba(16, 185, 129, 0.55);
    --accent-contrast: #ffffff;
}

/* ---------- Accent: Amber ---------- */
html[data-accent="amber"] {
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-soft: #fbbf24;
    --accent-glow: rgba(245, 158, 11, 0.24);
    --accent-muted: rgba(245, 158, 11, 0.14);
    --border-focus: rgba(245, 158, 11, 0.55);
    --accent-contrast: #1c1917;
}

/* ---------- Accent: Rose ---------- */
html[data-accent="rose"] {
    --accent: #f43f5e;
    --accent-hover: #e11d48;
    --accent-soft: #fb7185;
    --accent-glow: rgba(244, 63, 94, 0.22);
    --accent-muted: rgba(244, 63, 94, 0.12);
    --border-focus: rgba(244, 63, 94, 0.55);
    --accent-contrast: #ffffff;
}

/* ---------- Accent: Cyan ---------- */
html[data-accent="cyan"] {
    --accent: #06b6d4;
    --accent-hover: #0891b2;
    --accent-soft: #22d3ee;
    --accent-glow: rgba(6, 182, 212, 0.22);
    --accent-muted: rgba(6, 182, 212, 0.12);
    --border-focus: rgba(6, 182, 212, 0.55);
    --accent-contrast: #ffffff;
}

/* ---------- Body background adapts to mode ---------- */
body {
    background:
        radial-gradient(1200px 600px at 50% -10%, var(--body-glow-1), transparent 55%),
        radial-gradient(800px 400px at 100% 20%, var(--body-glow-2), transparent 50%),
        var(--bg);
    background-attachment: fixed;
    color: var(--text);
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Soften transition when switching themes (surfaces) */
.header,
.pc,
.auth-card,
.explore-search,
.explore-sort,
.home-section,
.theme-panel {
    transition:
        background-color 0.25s ease,
        border-color 0.25s ease,
        color 0.25s ease,
        box-shadow 0.25s ease;
}

/* ---------- Map common hard-coded surfaces via utilities ---------- */
html[data-mode="light"] .pc {
    background: var(--card-bg);
    border-color: var(--border);
}

html[data-mode="light"] .pc:hover {
    background: var(--bg-surface-2);
    border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
    box-shadow: var(--shadow);
}

html[data-mode="light"] .home-hero__title {
    color: var(--text);
}

html[data-mode="light"] .explore-hero__title {
    color: var(--text);
}

html[data-mode="light"] .hero-stat__value {
    background: linear-gradient(135deg, var(--text), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Header tokens sync */
.header {
    --h-bg: var(--header-bg);
    --h-border: var(--border);
    --h-accent: var(--accent);
    --h-accent-hover: var(--accent-hover);
    --h-accent-light: var(--accent-soft);
    --h-text: var(--text);
    --h-text-muted: var(--text-muted);
    --h-surface: var(--bg-surface);
    --h-surface-hover: var(--bg-hover);
    --h-elevated: var(--bg-elevated);
}

/* Logo gradient follows accent */
.h-logo__icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-soft)) !important;
    box-shadow: 0 4px 12px var(--accent-glow) !important;
}

.btn-primary,
.btn {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: var(--accent-contrast, #fff);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:hover,
.btn:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent));
    color: var(--accent-contrast, #fff);
}

.btn-outline {
    color: var(--accent-soft);
    border-color: color-mix(in srgb, var(--accent-soft) 50%, transparent);
}

.btn-outline:hover {
    background: var(--accent-muted);
    color: var(--accent);
    border-color: var(--accent-soft);
}

/* ============================================================
   Theme switcher UI
   ============================================================ */
.theme-wrap {
    position: relative;
}

.theme-panel {
    position: absolute;
    top: calc(100% + 10px);
    inset-inline-start: 0;
    width: min(300px, calc(100vw - 24px));
    padding: 14px;
    border-radius: var(--radius-lg, 16px);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 1200;
    display: none;
    text-align: right;
    direction: rtl;
}

.theme-panel.is-open {
    display: block;
    animation: theme-pop 0.18s ease;
}

@keyframes theme-pop {
    from {
        opacity: 0;
        transform: translateY(-6px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.theme-panel__title {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    margin: 0 0 10px;
    letter-spacing: 0.02em;
}

.theme-panel__section + .theme-panel__section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.theme-modes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.theme-mode-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 6px;
    border-radius: var(--radius-sm, 8px);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.theme-mode-btn:hover {
    border-color: var(--border-strong);
    color: var(--text);
    background: var(--bg-hover);
}

.theme-mode-btn.is-active {
    border-color: var(--accent);
    background: var(--accent-muted);
    color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-muted);
}

.theme-mode-btn svg {
    opacity: 0.9;
}

.theme-accents {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-start;
}

.theme-accent-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    box-shadow: inset 0 0 0 2px var(--bg-elevated);
    position: relative;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.theme-accent-btn:hover {
    transform: scale(1.08);
}

.theme-accent-btn.is-active {
    box-shadow:
        inset 0 0 0 2px var(--bg-elevated),
        0 0 0 2px var(--accent);
}

.theme-accent-btn.is-active::after {
    content: "";
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

html[data-mode="light"] .theme-accent-btn.is-active::after {
    background: rgba(15, 23, 42, 0.75);
}

.theme-accent-btn[data-accent="blue"] { background: linear-gradient(135deg, #3b82f6, #60a5fa); }
.theme-accent-btn[data-accent="violet"] { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.theme-accent-btn[data-accent="emerald"] { background: linear-gradient(135deg, #10b981, #34d399); }
.theme-accent-btn[data-accent="amber"] { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.theme-accent-btn[data-accent="rose"] { background: linear-gradient(135deg, #f43f5e, #fb7185); }
.theme-accent-btn[data-accent="cyan"] { background: linear-gradient(135deg, #06b6d4, #22d3ee); }

.theme-panel__hint {
    margin: 12px 0 0;
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Icon btn active state when panel open */
.h-icon-btn[aria-expanded="true"] {
    background: var(--accent-muted);
    color: var(--accent);
}

/**
 * Copyright (c) 2026 Sobhan Rasoulzadeh Asl (Sobhan-SRZA / Mr. Sinre)
 *
 * Licensed under the BSD 3-Clause License.
 * See the LICENSE file in the project root for license information.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */