:root {
    --navy-dark: #0f172a;
    --navy-primary: #1e293b;
    --navy-light: #334155;
    --orange-primary: #ea580c;
    --orange-hover: #c2410c;
    --orange-accent: #f97316;
    --orange-light: #fff7ed;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #cbd5e1;
    --success-color: #15803d;
    --danger-color: #b91c1c;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    user-select: none; /* Disables text selection across exam */
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
}

/* Center Layout (Login & Result) */
.center-body {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 100%);
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 36px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.login-card {
    max-width: 480px;
    border-top: 5px solid var(--orange-primary);
}

.login-card h2 {
    font-size: 1.55rem;
    margin-bottom: 8px;
    color: var(--navy-dark);
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--navy-primary);
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: all 0.2s ease;
}

.form-group input:focus {
    border-color: var(--orange-primary);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}

.warning-box {
    background-color: var(--orange-light);
    border-left: 4px solid var(--orange-primary);
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: #9a3412;
    margin-bottom: 24px;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-submit {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--orange-primary);
    color: #ffffff;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--orange-hover);
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

.btn-secondary {
    background-color: var(--navy-primary);
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: var(--navy-light);
}

.btn-secondary:disabled {
    background-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
}

.btn-submit {
    background-color: var(--orange-primary);
    color: #ffffff;
}

.btn-submit:hover {
    background-color: var(--orange-hover);
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
}

/* Exam Layout */
.exam-body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    background-color: var(--bg-color);
}

.exam-topbar {
    background: var(--navy-dark);
    color: #ffffff;
    padding: 14px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid var(--orange-primary);
}

.candidate-info strong {
    color: #ffffff;
}

.candidate-info span {
    color: #94a3b8;
}

.timer {
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    background: var(--orange-primary);
    padding: 6px 16px;
    border-radius: 6px;
    letter-spacing: 0.5px;
}

.exam-workspace {
    display: grid;
    grid-template-columns: 300px 1fr;
    height: calc(100vh - 61px);
}

/* Left Sidebar - Question Palette */
.sidebar-palette {
    background: #ffffff;
    border-right: 1px solid var(--border-color);
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.palette-title {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--navy-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.palette-btn {
    height: 42px;
    border: 1.5px solid var(--border-color);
    background: #f8fafc;
    color: var(--navy-primary);
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.palette-btn:hover {
    border-color: var(--orange-primary);
    color: var(--orange-primary);
    background: var(--orange-light);
}

.palette-btn.active {
    outline: 2px solid var(--navy-dark);
    outline-offset: 1px;
    border-color: var(--navy-dark);
}

.palette-btn.answered {
    background-color: var(--navy-primary);
    color: #ffffff;
    border-color: var(--navy-primary);
}

.palette-btn.answered.active {
    outline: 2px solid var(--orange-primary);
    outline-offset: 1px;
}

/* Main Content Area */
.question-area {
    padding: 36px 56px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: #ffffff;
}

.question-step h3 {
    font-size: 1.1rem;
    color: var(--orange-primary);
    margin-bottom: 12px;
    font-weight: 700;
}

.question-text {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 28px;
    color: var(--navy-dark);
}

.options-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.option-card {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    background: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
}

.option-card:hover {
    border-color: var(--orange-primary);
    background: var(--orange-light);
}

.option-card input[type="radio"] {
    margin-right: 14px;
    accent-color: var(--orange-primary);
    transform: scale(1.2);
}

.option-card.selected {
    border-color: var(--orange-primary);
    background: var(--orange-light);
    box-shadow: 0 0 0 1px var(--orange-primary);
}

.exam-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Result Card */
.result-card {
    max-width: 520px;
    text-align: center;
    border-top: 5px solid var(--orange-primary);
}

.result-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1.15rem;
    margin: 18px 0;
}

.pass {
    background-color: #dcfce7;
    color: var(--success-color);
}

.fail {
    background-color: #fee2e2;
    color: var(--danger-color);
}

.score-stats {
    display: flex;
    justify-content: space-around;
    margin: 24px 0;
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat-item span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 4px;
}

.stat-item strong {
    font-size: 1.45rem;
    color: var(--navy-dark);
}

/* Admin Dashboard Table */
.admin-body {
    padding: 36px 48px;
    background: var(--bg-color);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.admin-header h2 {
    color: var(--navy-dark);
}

.admin-search {
    padding: 10px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    width: 320px;
    outline: none;
    transition: border-color 0.2s;
}

.admin-search:focus {
    border-color: var(--orange-primary);
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.08);
}

.styled-table th, .styled-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.styled-table th {
    background-color: var(--navy-dark);
    font-size: 0.85rem;
    text-transform: uppercase;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 700;
}

.badge-pass {
    background: #dcfce7;
    color: #166534;
}

.badge-fail {
    background: #fee2e2;
    color: #991b1b;
}