/* theme.css: variables + base + layout. Split sheets load via <link> in index.html (order: theme, main, terminal, components, files, editor, agent, responsive). */

:root {
    --bg-primary: #0b1020;
    --bg-secondary: #0e1528;
    --bg-card: #121a30;
    --bg-card-hover: #182240;
    --bg-input: #0a1020;
    --border-color: #24304d;
    --border-focus: #5b7cfa;
    --text-primary: #eef1fb;
    --text-secondary: #9aa7c2;
    --text-muted: #6b7896;
    --accent: #5b7cfa;
    --accent-hover: #4764e8;
    --success: #2dd4a0;
    --success-bg: rgba(45, 212, 160, 0.14);
    --warning: #f5b942;
    --warning-bg: rgba(245, 185, 66, 0.14);
    --danger: #f07178;
    --danger-bg: rgba(240, 113, 120, 0.14);
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.14);
    --sidebar-width: 248px;
    --sidebar-collapsed: 64px;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.28);
    --transition: all 0.18s ease;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --topbar-h: 52px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    --content-pad: 28px;
}

/* Light theme */
[data-theme="light"] {
    --bg-primary: #f5f7fb;
    --bg-secondary: #eef1f7;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f4fa;
    --bg-input: #ffffff;
    --border-color: #d0d8e8;
    --border-focus: #4a6cf7;
    --text-primary: #1a1f2e;
    --text-secondary: #4a5568;
    --text-muted: #8b95a6;
    --accent: #4a6cf7;
    --accent-hover: #3a5ce5;
    --success: #1a9c6e;
    --success-bg: rgba(26, 156, 110, 0.12);
    --warning: #d4a01e;
    --warning-bg: rgba(212, 160, 30, 0.12);
    --danger: #d94a52;
    --danger-bg: rgba(217, 74, 82, 0.12);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.12);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* System preference fallback (when no explicit theme set) */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --bg-primary: #f5f7fb;
        --bg-secondary: #eef1f7;
        --bg-card: #ffffff;
        --bg-card-hover: #f0f4fa;
        --bg-input: #ffffff;
        --border-color: #d0d8e8;
        --border-focus: #4a6cf7;
        --text-primary: #1a1f2e;
        --text-secondary: #4a5568;
        --text-muted: #8b95a6;
        --accent: #4a6cf7;
        --accent-hover: #3a5ce5;
        --success: #1a9c6e;
        --success-bg: rgba(26, 156, 110, 0.12);
        --warning: #d4a01e;
        --warning-bg: rgba(212, 160, 30, 0.12);
        --danger: #d94a52;
        --danger-bg: rgba(217, 74, 82, 0.12);
        --info: #3b82f6;
        --info-bg: rgba(59, 130, 246, 0.12);
        --shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
        --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.06);
    }
}

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

html, body {
    height: 100%;
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

img, svg, .icon { max-width: 100%; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 8px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); background-clip: padding-box; }
* { scrollbar-width: thin; scrollbar-color: var(--border-color) transparent; }

.hidden { display: none !important; }

/* ── Icons8 monochrome icons (CSS mask, inherits currentColor) ── */
.icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    background: currentColor;
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    vertical-align: -0.2em;
}
.i-gamepad { -webkit-mask-image: url(/icons/gamepad.png); mask-image: url(/icons/gamepad.png); }
.i-leaf { -webkit-mask-image: url(/icons/leaf.png); mask-image: url(/icons/leaf.png); }
.i-analytics { -webkit-mask-image: url(/icons/analytics.png); mask-image: url(/icons/analytics.png); }
.i-server { -webkit-mask-image: url(/icons/server.png); mask-image: url(/icons/server.png); }
.i-shield { -webkit-mask-image: url(/icons/shield.png); mask-image: url(/icons/shield.png); }
.i-backup { -webkit-mask-image: url(/icons/backup.png); mask-image: url(/icons/backup.png); }
.i-trash { -webkit-mask-image: url(/icons/trash.png); mask-image: url(/icons/trash.png); }
.i-gear { -webkit-mask-image: url(/icons/gear.png); mask-image: url(/icons/gear.png); }
.i-logout { -webkit-mask-image: url(/icons/logout.png); mask-image: url(/icons/logout.png); }
.i-error { -webkit-mask-image: url(/icons/error.png); mask-image: url(/icons/error.png); }
.i-exclaim { -webkit-mask-image: url(/icons/exclaim.png); mask-image: url(/icons/exclaim.png); }
.i-flash { -webkit-mask-image: url(/icons/flash.png); mask-image: url(/icons/flash.png); }
.i-package { -webkit-mask-image: url(/icons/package.png); mask-image: url(/icons/package.png); }
.i-terminal { -webkit-mask-image: url(/icons/terminal.png); mask-image: url(/icons/terminal.png); }
.i-power { -webkit-mask-image: url(/icons/power.png); mask-image: url(/icons/power.png); }
.i-check { -webkit-mask-image: url(/icons/check.png); mask-image: url(/icons/check.png); }
.i-folder { -webkit-mask-image: url(/icons/folder.png); mask-image: url(/icons/folder.png); }
.i-home { -webkit-mask-image: url(/icons/home.png); mask-image: url(/icons/home.png); }
.i-close { -webkit-mask-image: url(/icons/close.png); mask-image: url(/icons/close.png); }
.i-play { -webkit-mask-image: url(/icons/play.png); mask-image: url(/icons/play.png); }
.i-pause { -webkit-mask-image: url(/icons/pause.png); mask-image: url(/icons/pause.png); }
.i-stop { -webkit-mask-image: url(/icons/stop.png); mask-image: url(/icons/stop.png); }
.i-info { -webkit-mask-image: url(/icons/info.png); mask-image: url(/icons/info.png); }
.i-plus { -webkit-mask-image: url(/icons/plus.png); mask-image: url(/icons/plus.png); }
.i-download { -webkit-mask-image: url(/icons/download.png); mask-image: url(/icons/download.png); }
.i-sync { -webkit-mask-image: url(/icons/sync.png); mask-image: url(/icons/sync.png); }
.i-document { -webkit-mask-image: url(/icons/document.png); mask-image: url(/icons/document.png); }
.i-desktop { -webkit-mask-image: url(/icons/desktop.png); mask-image: url(/icons/desktop.png); }
.i-bin { -webkit-mask-image: url(/icons/bin.png); mask-image: url(/icons/bin.png); }
.i-copy { -webkit-mask-image: url(/icons/copy.png); mask-image: url(/icons/copy.png); }
.i-voltage { -webkit-mask-image: url(/icons/voltage.png); mask-image: url(/icons/voltage.png); }
.i-sun { -webkit-mask-image: url(/icons/sun.svg); mask-image: url(/icons/sun.svg); }
.i-moon { -webkit-mask-image: url(/icons/moon.svg); mask-image: url(/icons/moon.svg); }

/* ── Login ── */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    height: 100vh;
    height: 100dvh;
    padding: calc(16px + var(--safe-top)) 16px calc(16px + var(--safe-bottom));
    overflow-y: auto;
    background:
        radial-gradient(ellipse 80% 50% at 20% 0%, rgba(91, 124, 250, 0.18), transparent 55%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(45, 212, 160, 0.1), transparent 50%),
        linear-gradient(160deg, #070b16 0%, #0b1020 50%, #0e1528 100%);
}

.login-card {
    background: linear-gradient(180deg, rgba(18, 26, 48, 0.95), rgba(14, 21, 40, 0.98));
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: clamp(24px, 5vw, 44px) clamp(20px, 4vw, 40px);
    width: min(400px, 100%);
    box-shadow: var(--shadow);
    text-align: center;
    backdrop-filter: blur(12px);
    flex-shrink: 0;
}

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(91, 124, 250, 0.25), rgba(45, 212, 160, 0.15));
    border: 1px solid rgba(91, 124, 250, 0.35);
    color: var(--accent);
}
.login-logo .icon { width: 32px; height: 32px; }
.login-card h1 { font-size: clamp(20px, 5vw, 24px); margin-bottom: 28px; font-weight: 650; letter-spacing: -0.02em; }
.login-error {
    color: var(--danger);
    margin-top: 16px;
    font-size: 13px;
    background: var(--danger-bg);
    border: 1px solid rgba(240, 113, 120, 0.3);
    border-radius: 8px;
    padding: 8px 12px;
}

/* ── App layout ── */
.app {
    display: flex;
    height: 100vh;
    height: 100dvh;
    min-height: 100dvh;
    padding-top: var(--safe-top);
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
}

.main-shell {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

/* ── Mobile topbar ── */
.topbar {
    display: none;
    align-items: center;
    gap: 12px;
    height: var(--topbar-h);
    padding: 0 12px;
    padding-left: calc(12px + var(--safe-left));
    padding-right: calc(12px + var(--safe-right));
    background: linear-gradient(180deg, var(--bg-secondary), #0c1324);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    z-index: 90;
}

.topbar-title {
    font-size: 15px;
    font-weight: 650;
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-spacer { flex: 1; }

.menu-btn {
    width: 44px;
    height: 44px;
    margin-left: -6px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    color: var(--text-primary);
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}
.menu-btn:hover, .menu-btn:focus-visible { background: var(--bg-card); outline: none; }
.menu-btn:active { background: var(--bg-card-hover); }
.menu-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.18s ease, opacity 0.18s ease;
}
body.sidebar-open .menu-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.sidebar-open .menu-bar:nth-child(2) { opacity: 0; }
body.sidebar-open .menu-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Sidebar ── */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, #0c1324 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    z-index: 200;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(4, 8, 18, 0.6);
    backdrop-filter: blur(2px);
    z-index: 150;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

.sidebar-header {
    padding: 18px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    min-height: 64px;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(91, 124, 250, 0.3), rgba(45, 212, 160, 0.15));
    border: 1px solid rgba(91, 124, 250, 0.3);
    color: var(--accent);
    flex-shrink: 0;
}
.sidebar-logo .icon { width: 20px; height: 20px; }
.sidebar-title { font-size: 15px; font-weight: 650; white-space: nowrap; letter-spacing: -0.01em; min-width: 0; overflow: hidden; text-overflow: ellipsis; }

.eco-badge {
    position: relative;
    cursor: pointer;
    margin-left: auto;
    color: var(--success);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
}
.eco-badge:hover { background: var(--bg-card); }
.eco-count {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--success);
    color: #06281c;
    border-radius: 999px;
    min-width: 16px;
    height: 16px;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.sidebar-nav {
    flex: 1;
    padding: 14px 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.sidebar-footer {
    padding: 10px;
    padding-bottom: calc(10px + var(--safe-bottom));
    border-top: 1px solid var(--border-color);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    min-height: 44px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    position: relative;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.nav-item.active {
    background: linear-gradient(90deg, rgba(91, 124, 250, 0.22), rgba(91, 124, 250, 0.08));
    color: #dfe6ff;
    border-color: rgba(91, 124, 250, 0.35);
    box-shadow: inset 3px 0 0 var(--accent);
}
.nav-item.active .nav-icon { color: var(--accent); }

.nav-icon {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: inherit;
}
.nav-icon .icon { width: 18px; height: 18px; }

/* ── Main content ── */
.main-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: var(--content-pad);
    padding-bottom: calc(var(--content-pad) + var(--safe-bottom));
    background:
        radial-gradient(ellipse 70% 40% at 100% 0%, rgba(91, 124, 250, 0.06), transparent 50%),
        var(--bg-primary);
    min-width: 0;
}

.page { animation: fadeIn 0.22s ease; min-width: 0; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}