/* ================================================================
 * LF Training v2 - Main stylesheet
 * ================================================================ */

:root {
    --red: #E8002D;
    --red-dark: #B5001F;
    --red-mid: #F4556B;
    --dark: #0D1117;
    --dark2: #161B22;
    --dark3: #1E2530;
    --card: #1A2131;
    --border: rgba(255, 255, 255, 0.08);
    --border2: rgba(255, 255, 255, 0.14);
    --text: #E8EAF0;
    --text2: #9CA3B0;
    --text3: #6B7280;
    --gold: #F5A623;
    --green: #22C55E;
    --blue: #3B82F6;
    --purple: #A78BFA;
    --cyan: #06B6D4;
    --font-display: 'Rajdhani', sans-serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--dark);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 14px;
    height: 100vh;
    overflow: hidden;
}

.app-container { display: flex; height: 100vh; }

/* SIDEBAR */
.sidebar {
    width: 240px;
    min-width: 240px;
    background: var(--dark2);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.sidebar-header {
    padding: 18px 20px 16px;
    border-bottom: 1px solid var(--border);
}
.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-logo-badge {
    background: var(--red);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 3px;
    letter-spacing: 1px;
}
.sidebar-logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.5px;
}
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}
.nav-group { margin-bottom: 8px; }
.nav-group-title {
    padding: 8px 20px 4px;
    font-size: 10px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    cursor: pointer;
    color: var(--text2);
    font-size: 13px;
    font-weight: 400;
    transition: all 0.15s;
    border-left: 2px solid transparent;
    text-decoration: none;
}
.nav-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.nav-item.active {
    background: rgba(232,0,45,0.1);
    color: #fff;
    border-left-color: var(--red);
    font-weight: 500;
}
.nav-item svg { width: 15px; height: 15px; flex-shrink: 0; }
.nav-badge {
    margin-left: auto;
    background: var(--red);
    color: #fff;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 600;
}
.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--dark3);
}
.user-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--red);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
}
.user-info { flex: 1; min-width: 0; }
.user-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-role { font-size: 11px; color: var(--text3); }
.btn-logout {
    background: transparent;
    border: 1px solid var(--border2);
    color: var(--text2);
    padding: 6px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.btn-logout:hover { color: var(--red-mid); border-color: var(--red-mid); }

/* MAIN */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.topbar {
    background: var(--dark2);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.topbar-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
}
.topbar-actions { display: flex; gap: 10px; align-items: center; }
.content { flex: 1; overflow: auto; padding: 20px 24px; }

/* CARDS */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    margin-bottom: 16px;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 18px;
    position: relative;
}
.stat-card-label {
    font-size: 11px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}
.stat-card-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 26px;
    color: var(--text);
    line-height: 1.1;
}

/* TABLES */
.table-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 16px;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    background: var(--dark3);
    text-align: left;
    padding: 10px 14px;
    font-size: 11px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}
.data-table td {
    padding: 10px 14px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* FORMS */
.form-group { margin-bottom: 14px; }
.form-label {
    display: block;
    font-size: 12px;
    color: var(--text2);
    margin-bottom: 6px;
    font-weight: 500;
}
.form-control, .form-select {
    width: 100%;
    background: var(--dark3);
    border: 1px solid var(--border2);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    outline: none;
    transition: border-color 0.15s;
}
.form-control:focus, .form-select:focus { border-color: var(--red); }

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }
.btn-secondary {
    background: var(--dark3);
    color: var(--text);
    border-color: var(--border2);
}
.btn-secondary:hover { background: var(--card); border-color: var(--text3); }
.btn-ghost { background: transparent; color: var(--text2); }
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,0.04); }

/* BADGES */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}
.badge-pass { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-fail { background: rgba(232,0,45,0.15); color: var(--red-mid); }
.badge-pending { background: rgba(245,166,35,0.15); color: var(--gold); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--blue); }

/* TOAST */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--dark2);
    border: 1px solid var(--border2);
    border-left: 3px solid var(--blue);
    padding: 12px 16px;
    border-radius: 6px;
    min-width: 300px;
    max-width: 400px;
    color: var(--text);
    font-size: 13px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    animation: slideIn 0.2s ease-out;
}
.toast-success { border-left-color: var(--green); }
.toast-error { border-left-color: var(--red); }
.toast-warning { border-left-color: var(--gold); }
@keyframes slideIn {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* GRID */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 16px; }
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
}