/* Student Portal Styles */

.student-body {
    background: var(--bg);
    min-height: 100vh;
}

/* Top Bar */
.student-topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.topbar-brand .dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
}

.brand-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.brand-tag {
    font-size: 11px;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding-left: 10px;
    border-left: 1px solid var(--border);
}

.topbar-nav {
    display: flex;
    gap: 4px;
    flex: 1;
}

.topbar-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.15s;
    text-decoration: none;
    white-space: nowrap;
}

.topbar-link:hover {
    color: var(--white);
    background: rgba(162, 89, 255, 0.08);
}

.topbar-link.active {
    color: var(--accent);
    background: rgba(162, 89, 255, 0.12);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.topbar-username {
    font-size: 13px;
    color: var(--muted);
    font-weight: 500;
}

/* Main Content */
.student-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
}

/* Welcome Section */
.s-welcome {
    margin-bottom: 28px;
}

.s-welcome h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 6px;
}

.s-welcome p {
    color: var(--muted);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Stats */
.s-stats {
    grid-template-columns: repeat(4, 1fr);
}

/* Challenge Grid */
.s-challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.s-challenge-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    transition: border-color 0.2s, transform 0.15s;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.s-challenge-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.s-challenge-card.solved {
    border-color: rgba(52, 211, 153, 0.3);
}

.s-challenge-card.solved:hover {
    border-color: var(--success);
}

.s-challenge-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.s-challenge-pts {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

.s-challenge-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
}

.s-challenge-desc {
    font-size: 12px;
    color: var(--dim);
    line-height: 1.5;
    flex: 1;
}

.s-challenge-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.s-solved-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--success);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.s-solved-tag::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
}

.s-unsolved-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Filter Bar */
.s-filter-bar {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.s-filter-btn {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: transparent;
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font);
}

.s-filter-btn:hover {
    border-color: var(--accent);
    color: var(--white);
}

.s-filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Progress Bar */
.s-progress-bar {
    width: 120px;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.s-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s;
}

/* Instructions */
.s-instructions {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.s-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.s-step-num {
    width: 32px;
    height: 32px;
    background: rgba(162, 89, 255, 0.15);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.s-step strong {
    display: block;
    color: var(--white);
    margin-bottom: 4px;
}

.s-step p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.s-step code {
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
}

/* Profile */
.s-profile-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.s-profile-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(42, 42, 58, 0.5);
}

.s-profile-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.s-profile-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--dim);
}

.s-profile-row code {
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
}

/* My team highlight */
.s-my-team {
    background: rgba(162, 89, 255, 0.08);
}

.s-my-team td {
    color: var(--accent);
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 400px;
    max-width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 12px;
}

.login-brand .dot {
    width: 10px;
    height: 10px;
    background: var(--success);
    border-radius: 50%;
}

.login-brand h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
}

.login-subtitle {
    color: var(--dim);
    font-size: 13px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form .form-control {
    padding: 12px 16px;
    font-size: 14px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    margin-top: 8px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.login-footer p {
    color: var(--dim);
    font-size: 12px;
}

/* Domain badges for categories */
.badge-misc { background: rgba(162, 89, 255, 0.15); color: var(--accent); }
.badge-osint { background: rgba(96, 165, 250, 0.15); color: var(--info); }
.badge-cloud { background: rgba(251, 191, 36, 0.15); color: var(--warning); }
.badge-forensics { background: rgba(52, 211, 153, 0.15); color: var(--success); }

/* Responsive */
@media (max-width: 768px) {
    .topbar-inner {
        padding: 0 16px;
        gap: 16px;
    }

    .brand-tag {
        display: none;
    }

    .topbar-nav {
        gap: 2px;
    }

    .topbar-link span {
        display: none;
    }

    .topbar-username {
        display: none;
    }

    .student-main {
        padding: 20px 16px;
    }

    .s-stats {
        grid-template-columns: 1fr 1fr;
    }

    .s-challenge-grid {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }
}