/* ====== RESET & BASE ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f1f5f9;
    color: #0b1e33;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 28px;
    padding: 30px 32px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #0f4c75;
    border-left: 6px solid #f0b429;
    padding-left: 18px;
    margin-bottom: 28px;
    letter-spacing: -0.02em;
}

h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* ====== CARDS ====== */
.card {
    background: #ffffff;
    border: 1px solid #e9edf2;
    border-radius: 18px;
    padding: 20px 24px;
    margin-bottom: 28px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    transition: border 0.2s;
}

.card:hover {
    border-color: #cbd5e1;
}

.question {
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 1px solid #f1f5f9;
}

.question:last-child {
    border-bottom: 0;
}

.options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 32px;
    margin-top: 8px;
}

.options label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.98rem;
    cursor: pointer;
}

/* ====== FORM ELEMENTS ====== */
select, textarea, input[type="text"], input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d9e6;
    border-radius: 12px;
    font-family: inherit;
    font-size: 0.95rem;
    background: #fafcff;
    transition: 0.2s;
    margin-top: 6px;
}

select:focus, textarea:focus, input:focus {
    outline: none;
    border-color: #0f4c75;
    box-shadow: 0 0 0 3px rgba(15, 76, 117, 0.15);
}

textarea {
    resize: vertical;
    min-height: 70px;
}

/* ====== BUTTONS ====== */
.btn-primary, .btn-secondary, .download-btn {
    background: #0f4c75;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(15, 76, 117, 0.2);
}

.btn-primary:hover {
    background: #1a5f8a;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(15, 76, 117, 0.25);
}

.btn-secondary {
    background: #e9edf2;
    color: #1e293b;
    box-shadow: none;
}

.btn-secondary:hover {
    background: #d1d9e6;
}

.download-btn {
    background: linear-gradient(135deg, #0f4c75, #3282b8);
    margin: 6px 4px;
}

.download-btn:hover {
    transform: scale(1.02);
}

/* ====== EXAM SECTIONS ====== */
.exam-section {
    margin-bottom: 40px;
}

.exam-section h3 {
    font-size: 1.6rem;
    border-bottom: 2px solid #f0b429;
    padding-bottom: 8px;
    margin-bottom: 20px;
}

.reading-passage {
    background: #f8fafc;
    padding: 18px 22px;
    border-radius: 16px;
    margin-bottom: 25px;
    border-left: 4px solid #0f4c75;
}

.option-card {
    background: #f9fbfd;
    padding: 18px;
    border-radius: 14px;
    margin-bottom: 20px;
    border: 1px solid #eef2f6;
}

/* ====== SPEAKING VOICE BUTTON ====== */
.speak-btn {
    background: #f0b429;
    color: #0b1e33;
    border: none;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    margin-left: 10px;
}

.speak-btn:hover {
    background: #e6a820;
    transform: scale(1.05);
}

.speak-btn:active {
    transform: scale(0.95);
}

.speak-btn.playing {
    background: #e53e3e;
    color: white;
}

/* ====== EXAM HEADER ====== */
.exam-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.user-label {
    font-weight: 600;
}

.timer-box {
    font-size: 1.8rem;
    font-weight: 700;
    background: #0f4c75;
    color: white;
    padding: 6px 22px;
    border-radius: 50px;
    display: inline-block;
}

/* ====== LOGIN CARD ====== */
.login-card {
    max-width: 460px;
    margin: 20px auto;
    padding: 30px 28px;
    background: white;
    border-radius: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid #e9edf2;
}

.login-card h3 {
    font-size: 1.8rem;
    margin-bottom: 6px;
}

.login-card .sub {
    color: #64748b;
    margin-bottom: 20px;
}

.login-card input {
    margin-bottom: 14px;
}

#loginStatus {
    margin-top: 14px;
}

/* ====== RESULT CARD ====== */
.result-card {
    background: white;
    border-radius: 24px;
    padding: 30px;
    border: 1px solid #e2e8f0;
    margin-top: 20px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.result-score-circle {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 15px 0;
}

.big-score {
    font-size: 4rem;
    font-weight: 800;
    color: #0f4c75;
}

.total-score {
    font-size: 1.2rem;
    color: #64748b;
}

.result-grade {
    font-size: 1.8rem;
    font-weight: 700;
    padding: 8px 20px;
    border-radius: 40px;
    display: inline-block;
    margin: 8px 0;
}

.grade-excellent {
    background: #dcfce7;
    color: #166534;
}

.grade-good {
    background: #dbeafe;
    color: #1e40af;
}

.grade-fair {
    background: #fef3c7;
    color: #92400e;
}

.grade-poor {
    background: #fee2e2;
    color: #991b1b;
}

.result-details {
    margin-top: 20px;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.section-name {
    width: 140px;
    font-weight: 500;
}

.section-score {
    width: 70px;
    font-weight: 600;
    text-align: right;
}

.section-bar {
    flex: 1;
    height: 8px;
    background: #e9edf2;
    border-radius: 20px;
    overflow: hidden;
}

.section-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #0f4c75, #f0b429);
    border-radius: 20px;
}

/* ====== AUDIO ====== */
.audio-container {
    background: #f1f5f9;
    padding: 18px;
    border-radius: 16px;
    margin-bottom: 20px;
}

.audio-remaining {
    font-weight: 500;
    margin-top: 8px;
}

/* ====== ACTION BUTTONS ====== */
.action-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin: 30px 0 20px;
}

/* ====== HIDDEN ====== */
.hidden {
    display: none;
}

/* ====== PRINT ====== */
@media print {
    body {
        background: white;
        padding: 0;
    }
    .container {
        box-shadow: none;
        padding: 10px;
    }
    .btn-primary, .btn-secondary, .download-btn, 
    #examAuth, #examContent .btn-primary, 
    .action-buttons, .no-print {
        display: none !important;
    }
    .result-card {
        border: 1px solid #ccc;
    }
}

/* ====== RESPONSIVE ====== */
@media (max-width: 700px) {
    .container {
        padding: 16px;
    }
    .result-item {
        flex-wrap: wrap;
    }
    .section-name {
        width: 100%;
    }
    .options {
        gap: 10px;
    }
}