/* ══════════════════════════════════════════════
   DevSpells — Shared Styles
   ══════════════════════════════════════════════ */

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

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Light Theme ── */
[data-theme="light"] {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F3F5;
    --bg-editor: #FAFBFC;
    --bg-hover: #F1F3F5;
    --border: #E2E5E9;
    --border-focus: #4F46E5;
    --text-primary: #1A1A2E;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --accent: #4F46E5;
    --accent-hover: #4338CA;
    --accent-light: #EEF2FF;
    --accent-text: #FFFFFF;
    --success: #10B981;
    --success-bg: #ECFDF5;
    --success-border: #A7F3D0;
    --error: #EF4444;
    --error-bg: #FEF2F2;
    --error-border: #FECACA;
    --warning: #F59E0B;
    --card-bg: #FFFFFF;
    --card-border: #E2E5E9;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
    --scrollbar-track: #F1F3F5;
    --scrollbar-thumb: #D1D5DB;
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --bg-primary: #0F0F14;
    --bg-secondary: #16161D;
    --bg-tertiary: #1E1E28;
    --bg-editor: #12121A;
    --bg-hover: #1E1E28;
    --border: #2A2A3A;
    --border-focus: #6366F1;
    --text-primary: #E8E8ED;
    --text-secondary: #9CA3AF;
    --text-tertiary: #6B7280;
    --accent: #6366F1;
    --accent-hover: #818CF8;
    --accent-light: #1E1B4B;
    --accent-text: #FFFFFF;
    --success: #34D399;
    --success-bg: #064E3B;
    --success-border: #065F46;
    --error: #F87171;
    --error-bg: #450A0A;
    --error-border: #7F1D1D;
    --warning: #FBBF24;
    --card-bg: #16161D;
    --card-border: #2A2A3A;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
    --scrollbar-track: #1E1E28;
    --scrollbar-thumb: #3A3A4A;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ── Base ── */
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Header ── */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background var(--transition), border-color var(--transition);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    cursor: pointer;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

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

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    background: none;
    white-space: nowrap;
    text-decoration: none;
    font-family: var(--font-sans);
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-item.active {
    color: var(--accent);
    background: var(--accent-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Theme Toggle ── */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.theme-toggle svg { width: 18px; height: 18px; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
    text-decoration: none;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--text-tertiary);
}

.btn-icon {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    position: relative;
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-icon svg { width: 15px; height: 15px; }

.btn-icon .tooltip {
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 8px;
    background: var(--text-primary);
    color: var(--bg-primary);
    font-size: 11px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 10;
}

.btn-icon:hover .tooltip { opacity: 1; }

/* ── Footer ── */
.footer {
    text-align: center;
    padding: 24px 20px;
    font-size: 12px;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border);
    margin-top: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.footer-brand {
    font-weight: 500;
    color: var(--text-secondary);
}

.footer-brand a {
    color: var(--accent);
    text-decoration: none;
}

.footer-privacy {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    color: var(--text-tertiary);
    padding: 4px 10px;
    border-radius: 12px;
    background: var(--bg-tertiary);
}

.footer-privacy svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.footer-dev {
    font-size: 11px;
    color: var(--text-tertiary);
}

.footer-dev strong {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ── Toast ── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 10px 18px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: all 300ms ease;
    pointer-events: none;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* ── Animations ── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .header { padding: 0 16px; }
    .nav { display: none; }
    .btn { padding: 9px 16px; font-size: 12px; }
}