/* MailBlast - Light Theme + Mobile Responsive */
:root {
    --bg: #f1f5f9;
    --bg2: #ffffff;
    --bg3: #f8fafc;
    --border: #e2e8f0;
    --border2: #cbd5e1;
    --text: #0f172a;
    --text-muted: #475569;
    --text-dim: #94a3b8;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-bg: #eef2ff;
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --success-border: #bbf7d0;
    --error: #dc2626;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --warning-border: #fde68a;
    --info: #0284c7;
    --info-bg: #f0f9ff;
    --info-border: #bae6fd;
    --radius: 12px;
    --radius-sm: 8px;
    --sidebar-w: 220px;
    --bottom-nav-h: 60px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR (Desktop) ===== */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg2);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 200;
    overflow-y: auto;
    box-shadow: var(--shadow);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 16px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 16px;
    color: var(--primary);
    letter-spacing: -0.3px;
}
.logo-icon { font-size: 20px; }
.logo-text { color: var(--text); }
.logo-text span { color: var(--primary); }

.nav-list { list-style: none; padding: 10px 8px; flex: 1; }
.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    transition: all .15s;
    font-size: 13.5px;
    font-weight: 500;
}
.nav-link:hover { background: var(--bg3); color: var(--text); }
.nav-link.active {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
}
.nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.admin-avatar {
    width: 30px; height: 30px;
    background: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.admin-name { font-size: 12px; color: var(--text-muted); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.logout-btn { color: var(--text-dim); font-size: 16px; text-decoration: none; transition: color .15s; padding: 4px; }
.logout-btn:hover { color: var(--error); }

/* ===== MAIN CONTENT ===== */
.main-wrap {
    margin-left: var(--sidebar-w);
    flex: 1;
    padding: 24px 28px;
    max-width: calc(100vw - var(--sidebar-w));
    min-height: 100vh;
}

/* ===== MOBILE TOP BAR ===== */
.mobile-topbar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 56px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    z-index: 300;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    box-shadow: var(--shadow);
}
.mobile-topbar .logo { font-size: 16px; font-weight: 700; color: var(--text); flex: 1; }
.mobile-topbar .logo span { color: var(--primary); }
.mobile-topbar .avatar {
    width: 32px; height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700; color: #fff;
}

/* ===== BOTTOM NAV (Mobile) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--bottom-nav-h);
    background: var(--bg2);
    border-top: 1px solid var(--border);
    z-index: 300;
    box-shadow: 0 -2px 8px rgba(0,0,0,.06);
}
.bottom-nav ul {
    list-style: none;
    display: flex;
    height: 100%;
}
.bottom-nav ul li { flex: 1; }
.bottom-nav ul li a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 3px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 10px;
    font-weight: 500;
    transition: color .15s;
    -webkit-tap-highlight-color: transparent;
}
.bottom-nav ul li a .bnav-icon { font-size: 20px; line-height: 1; }
.bottom-nav ul li a.active { color: var(--primary); }
.bottom-nav ul li a:active { background: var(--bg3); }

/* ===== PAGE HEADER ===== */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-title { font-size: 20px; font-weight: 700; color: var(--text); }
.page-subtitle { color: var(--text-muted); font-size: 13px; margin-top: 2px; }

/* ===== STATS CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}
.stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .6px; margin-bottom: 8px; font-weight: 600; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--text); }
.stat-sub { font-size: 12px; color: var(--text-dim); margin-top: 3px; }
.stat-icon { font-size: 22px; float: right; margin-top: -2px; opacity: .8; }

/* ===== TABLE ===== */
.table-wrap {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; }
thead th {
    background: var(--bg3);
    padding: 11px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg3); }
td { padding: 13px 16px; color: var(--text); vertical-align: middle; }
.td-muted { color: var(--text-muted); font-size: 13px; }
.td-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .3px;
    white-space: nowrap;
}
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-error   { background: var(--error-bg);   color: var(--error);   border: 1px solid var(--error-border); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-info    { background: var(--info-bg);    color: var(--info);    border: 1px solid var(--info-border); }
.badge-default { background: #f1f5f9;           color: #64748b;        border: 1px solid #e2e8f0; }
.badge-primary { background: var(--primary-bg); color: var(--primary); border: 1px solid #c7d2fe; }

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all .15s;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 1px 3px rgba(99,102,241,.3); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-outline { background: #fff; color: var(--text-muted); border-color: var(--border2); }
.btn-outline:hover { background: var(--bg3); color: var(--text); border-color: var(--border2); }
.btn-danger { background: var(--error-bg); color: var(--error); border-color: var(--error-border); }
.btn-danger:hover { background: #fee2e2; }
.btn-success { background: var(--success-bg); color: var(--success); border-color: var(--success-border); }
.btn-info { background: var(--info-bg); color: var(--info); border-color: var(--info-border); }

/* ===== FORMS ===== */
.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}
.card-title { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 18px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12.5px; color: var(--text-muted); margin-bottom: 5px; font-weight: 600; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    background: #fff;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
    font-family: inherit;
    -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-hint { font-size: 11.5px; color: var(--text-dim); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; border-top: 1px solid var(--border); padding-top: 18px; flex-wrap: wrap; }

/* ===== ALERTS ===== */
.alert {
    padding: 11px 15px;
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    font-size: 13.5px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    border: 1px solid;
}
.alert-success { background: var(--success-bg); border-color: var(--success-border); color: #15803d; }
.alert-error   { background: var(--error-bg);   border-color: var(--error-border);   color: #b91c1c; }
.alert-info    { background: var(--info-bg);     border-color: var(--info-border);    color: #0369a1; }
.alert-warning { background: var(--warning-bg);  border-color: var(--warning-border); color: #b45309; }

/* ===== EMPTY STATE ===== */
.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 44px; margin-bottom: 10px; opacity: .7; }
.empty-state h3 { font-size: 15px; color: var(--text); margin-bottom: 6px; font-weight: 600; }
.empty-state p { font-size: 13px; margin-bottom: 18px; }

/* ===== PAGINATION ===== */
.pagination { display: flex; gap: 5px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.pagination a, .pagination span {
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    font-size: 13px;
    text-decoration: none;
    color: var(--text-muted);
    background: #fff;
    transition: all .15s;
}
.pagination a:hover { background: var(--bg3); color: var(--text); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== TABS ===== */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 18px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tab {
    padding: 8px 14px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    text-decoration: none;
    transition: all .15s;
    white-space: nowrap;
    font-weight: 500;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }

/* ===== EDITOR ===== */
.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px;
    background: var(--bg3);
    border: 1.5px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.editor-toolbar button {
    padding: 4px 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    transition: all .15s;
}
.editor-toolbar button:hover { background: var(--primary-bg); color: var(--primary); border-color: #c7d2fe; }
.editor-area {
    border: 1.5px solid var(--border) !important;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
    background: #fff !important;
}

/* ===== PROGRESS BAR ===== */
.progress-bar { height: 6px; background: var(--bg); border-radius: 3px; overflow: hidden; border: 1px solid var(--border); }
.progress-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width .3s; }

/* ===== TOGGLE ===== */
.toggle { position: relative; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
    width: 38px; height: 22px;
    background: var(--border2);
    border-radius: 11px;
    transition: background .2s;
    position: relative;
    flex-shrink: 0;
}
.toggle input:checked + .toggle-track { background: var(--primary); }
.toggle-track::after {
    content: '';
    position: absolute;
    top: 3px; left: 3px;
    width: 16px; height: 16px;
    background: #fff;
    border-radius: 50%;
    transition: left .2s;
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle input:checked + .toggle-track::after { left: 19px; }

/* ===== LOGIN PAGE ===== */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #eef2ff 0%, #f8fafc 50%, #e0f2fe 100%);
    width: 100%;
}
.login-card {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 36px 32px;
    box-shadow: var(--shadow-md);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo h1 { font-size: 24px; font-weight: 700; color: var(--text); }
.login-logo h1 span { color: var(--primary); }
.login-logo p { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

/* ===== MISC ===== */
.divider { height: 1px; background: var(--border); margin: 18px 0; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 12px; }
.mono { font-family: 'Courier New', monospace; font-size: 12px; background: var(--bg3); padding: 2px 6px; border-radius: 4px; color: var(--primary); border: 1px solid var(--border); }
.tag { display: inline-block; background: var(--primary-bg); color: var(--primary); padding: 2px 8px; border-radius: 4px; font-size: 11px; border: 1px solid #c7d2fe; cursor: pointer; }
.tag:hover { background: #c7d2fe; }

/* ===== STATS ROW ===== */
.stats-row { display: flex; gap: 24px; flex-wrap: wrap; }
.stat-mini { text-align: center; }
.stat-mini .val { font-size: 20px; font-weight: 700; color: var(--text); }
.stat-mini .lbl { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .4px; }

/* ===== RESPONSIVE — MOBILE ===== */
@media (max-width: 768px) {
    /* Hide desktop sidebar */
    .sidebar { display: none; }

    /* Show mobile bars */
    .mobile-topbar { display: flex; }
    .bottom-nav { display: block; }

    /* Main content adjustment */
    .main-wrap {
        margin-left: 0;
        max-width: 100vw;
        padding: 16px 14px;
        padding-top: 72px; /* topbar height + gap */
        padding-bottom: calc(var(--bottom-nav-h) + 12px);
    }

    /* Stack form rows */
    .form-row, .form-row-3 { grid-template-columns: 1fr; gap: 0; }

    /* Stats grid 2 cols on mobile */
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 14px; }
    .stat-value { font-size: 22px; }

    /* Page header stack */
    .page-header { flex-direction: column; align-items: flex-start; }
    .page-header .btn { align-self: stretch; justify-content: center; }
    .page-title { font-size: 18px; }

    /* Table: horizontal scroll */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 520px; }
    td, th { padding: 10px 12px; }

    /* Card padding */
    .card { padding: 16px; }

    /* Dashboard 2-col grid → single col */
    div[style*="grid-template-columns:1.5fr 1fr"] {
        display: block !important;
    }
    div[style*="grid-template-columns:1.5fr 1fr"] > div + div {
        margin-top: 16px;
    }

    /* Form actions wrap */
    .form-actions { flex-direction: column; }
    .form-actions .btn { justify-content: center; }

    /* Tabs scroll */
    .tabs { gap: 0; }
    .tab { padding: 8px 12px; font-size: 12px; }

    /* Td actions wrap */
    .td-actions { gap: 4px; }
    .btn-sm { padding: 5px 9px; font-size: 11px; }

    /* Login card */
    .login-card { padding: 28px 20px; }
}

@media (max-width: 420px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-value { font-size: 20px; }
    .page-title { font-size: 17px; }
}