/* Dashboard Theme — Dark (default) */
:root {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-header: linear-gradient(135deg, #0f172a, #1e293b);
    --bg-header-solid: #0f172a;
    --bg-input: #1e293b;
    --bg-table-head: #1a2332;
    --bg-hover: #253347;
    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-header: #f1f5f9;
    --border: #334155;
    --border-input: #475569;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.4);
    --badge-ok-bg: rgba(34,197,94,0.15); --badge-ok: #4ade80;
    --badge-warn-bg: rgba(251,146,60,0.15); --badge-warn: #fb923c;
    --badge-err-bg: rgba(248,113,113,0.15); --badge-err: #f87171;
    --badge-info-bg: rgba(59,130,246,0.15); --badge-info: #60a5fa;
    --badge-off-bg: rgba(255,255,255,0.05); --badge-off: #64748b;
    --msg-bg: rgba(34,197,94,0.1); --msg-text: #4ade80;
    --help-bg: rgba(30,41,59,0.8); --help-border: #475569;
    --tab-active-bg: #253347;
    --tab-border: #3b82f6;
    --btn-bg: #3b82f6; --btn-text: #fff; --btn-hover: #2563eb;
    --login-box-bg: #1e293b;
    --login-box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    --error-bg: rgba(248,113,113,0.1); --error-text: #f87171;
    --stat-number: #f1f5f9;
    --accent: #3b82f6;
    --row-hover: #253347;
}

/* Light mode */
[data-theme="light"] {
    --bg: #f0f2f5;
    --bg-card: #ffffff;
    --bg-header: linear-gradient(135deg, #1e293b, #334155);
    --bg-header-solid: #1e293b;
    --bg-input: #ffffff;
    --bg-table-head: #f8fafc;
    --bg-hover: #f1f5f9;
    --text: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-header: #f1f5f9;
    --border: #e2e8f0;
    --border-input: #cbd5e1;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.08);
    --badge-ok-bg: #dcfce7; --badge-ok: #16a34a;
    --badge-warn-bg: #fef3c7; --badge-warn: #d97706;
    --badge-err-bg: #fee2e2; --badge-err: #dc2626;
    --badge-info-bg: #dbeafe; --badge-info: #2563eb;
    --badge-off-bg: #f1f5f9; --badge-off: #94a3b8;
    --msg-bg: #dcfce7; --msg-text: #16a34a;
    --help-bg: #f8fafc; --help-border: #3b82f6;
    --tab-active-bg: #ffffff;
    --tab-border: #3b82f6;
    --btn-bg: #1e293b; --btn-text: #fff; --btn-hover: #334155;
    --login-box-bg: #ffffff;
    --login-box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    --error-bg: #fee2e2; --error-text: #dc2626;
    --stat-number: #1e293b;
    --accent: #3b82f6;
    --row-hover: #f8fafc;
}

/* Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); transition: background 0.3s, color 0.3s; }

/* Header */
.header { background: var(--bg-header); color: var(--text-header); padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; border-bottom: none; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.header h1 { font-size: 18px; font-weight: 600; }
.header-right { display: flex; gap: 16px; align-items: center; }
.header-right a { color: rgba(255,255,255,0.7); text-decoration: none; font-size: 13px; transition: color 0.2s; }
.header-right a:hover { color: #fff; }

/* Container */
.container { max-width: 1200px; margin: 24px auto; padding: 0 24px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--bg-card); padding: 20px; border-radius: 10px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: box-shadow 0.2s, transform 0.2s; }
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.stat-card .number { font-size: 28px; font-weight: 700; color: var(--stat-number); }
.stat-card .label { font-size: 12px; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

/* Sections / Cards */
.section, .card { background: var(--bg-card); border-radius: 10px; box-shadow: var(--shadow); margin-bottom: 24px; overflow: hidden; border: 1px solid var(--border); }
.section h3 { padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: 14px; font-weight: 600; color: var(--text); }
.card { padding: 24px; }
.card h3 { margin-bottom: 16px; font-size: 15px; color: var(--text); padding: 0; border: none; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 10px 16px; background: var(--bg-table-head); color: var(--text-secondary); font-weight: 600; border-bottom: 2px solid var(--border); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
td { padding: 10px 16px; border-bottom: 1px solid var(--border); color: var(--text); }
tr:hover td { background: var(--row-hover); }

/* Badges */
.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; letter-spacing: 0.3px; }
.badge-ok { background: var(--badge-ok-bg); color: var(--badge-ok); }
.badge-warn { background: var(--badge-warn-bg); color: var(--badge-warn); }
.badge-err { background: var(--badge-err-bg); color: var(--badge-err); }
.badge-info { background: var(--badge-info-bg); color: var(--badge-info); }
.badge-off { background: var(--badge-off-bg); color: var(--badge-off); }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 4px; }
.form-group small { display: block; font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.form-group input, .form-group select { width: 100%; padding: 9px 12px; border: 1px solid var(--border-input); border-radius: 6px; font-size: 14px; background: var(--bg-input); color: var(--text); transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }

/* Buttons */
.btn { padding: 8px 20px; border: none; border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 600; transition: all 0.2s; }
.btn-primary { background: var(--btn-bg); color: var(--btn-text); }
.btn-primary:hover { background: var(--btn-hover); transform: translateY(-1px); }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #ef4444; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* Messages */
.msg { padding: 10px 16px; border-radius: 4px; margin-bottom: 16px; background: var(--msg-bg); color: var(--msg-text); font-size: 13px; }
.error-msg { background: var(--error-bg); color: var(--error-text); padding: 8px 12px; border-radius: 4px; margin-bottom: 12px; font-size: 13px; }

/* Tabs */
.tabs { display: flex; gap: 0; margin-bottom: 24px; background: var(--bg-card); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.tabs a { padding: 12px 24px; text-decoration: none; color: var(--text-muted); font-size: 14px; font-weight: 500; border-bottom: 2px solid transparent; transition: all 0.2s; }
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); background: var(--tab-active-bg); font-weight: 600; }
.tabs a:hover { background: var(--bg-hover); color: var(--text); }

/* Help box */
.help-box { background: var(--help-bg); border-left: 3px solid var(--help-border); padding: 12px 16px; margin-bottom: 20px; font-size: 13px; color: var(--text-secondary); line-height: 1.6; border-radius: 0 6px 6px 0; }
.help-box a { color: var(--accent); text-decoration: none; font-weight: 500; }
.help-box a:hover { text-decoration: underline; }

.inline-form { display: inline; }

/* Theme toggle */
.theme-toggle { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--text-muted); }
.theme-toggle:hover { color: var(--text-header); }
.theme-icon { font-size: 16px; }

/* Login */
.login-wrapper { display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.login-box { background: var(--login-box-bg); padding: 40px; border-radius: 12px; box-shadow: var(--login-box-shadow); width: 340px; border: 1px solid var(--border); }
.login-box h2 { margin-bottom: 24px; color: var(--text); font-weight: 700; }
.login-box input { width: 100%; padding: 10px 12px; margin-bottom: 12px; border: 1px solid var(--border-input); border-radius: 6px; font-size: 14px; background: var(--bg-input); color: var(--text); transition: border-color 0.2s; }
.login-box input:focus { outline: none; border-color: var(--accent); }
.login-box button { width: 100%; padding: 11px; background: var(--btn-bg); color: var(--btn-text); border: none; border-radius: 6px; cursor: pointer; font-size: 14px; font-weight: 600; transition: background 0.2s; }
.login-box button:hover { background: var(--btn-hover); }
.lang-link { text-align: center; margin-top: 12px; }
.lang-link a { color: var(--text-muted); font-size: 12px; text-decoration: none; }
.g-recaptcha { margin-bottom: 12px; }