/* style.css - lengkap + revisi pembahasan dua kolom + navigasi horizontal + result page baru + login page enhanced */

/* ---------- Vars / Theme ---------- */
:root{
    --primary-color: #007AFF;
    --primary-hover: #0051D5;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --danger-color: #FF3B30;
    --light-gray: #F2F2F7;
    --medium-gray: #E5E5EA;
    --dark-gray: #8E8E93;
    --text-color: #1C1C1E;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255,255,255,0.72);
    --card-bg-solid: rgba(255,255,255,0.95);
    --font-family: "Inter", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    --shadow: 0 8px 32px rgba(0,0,0,0.10);
    --border-radius: 16px;
    
    /* Warna untuk lingkaran skor */
    --score-color: #007AFF; /* Default */
    --score-percent: 0%; /* Default */
}

/* ---------- Reset & Base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html,body { height: 100%; }
body{
    font-family: var(--font-family);
    color: var(--text-color);
    background: var(--light-gray);
    min-height: 100vh;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}
body::before{
    content: "";
    position: fixed;
    inset: 0;
    background: var(--bg-gradient);
    opacity: 0.14;
    z-index: -1;
    filter: blur(40px);
}
.main-container{ width: 100%; max-width: 1200px; }
.page{ display: none; animation: fadeIn 0.45s ease-in-out; }
.page.active{ display: block; }

/* ---------- Cards ---------- */
.card{
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.45);
    padding: 2rem;
    margin-bottom: 1.25rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover{ transform: translateY(-6px); box-shadow: 0 18px 48px rgba(0,0,0,0.12); }

/* ---------- Login Enhanced ---------- */
.login-card{
    max-width: 500px;
    margin: 2rem auto;
    background: var(--card-bg-solid);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color), var(--warning-color));
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.card-header{ margin-bottom: 1.25rem; text-align: center; }
.card-header i{ 
    font-size: 3.5rem; 
    color: var(--primary-color); 
    display:block; 
    margin-bottom: 1rem; 
    background: linear-gradient(135deg, var(--primary-color), #8A2BE2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.card-header h2{ 
    font-size: 1.8rem; 
    margin-bottom: 0.3rem; 
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-color);
}
.card-header h2 .highlight {
    background: linear-gradient(135deg, var(--primary-color), #8A2BE2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2rem;
    font-weight: 900;
}
.card-header h1.highlight {
    background: linear-gradient(135deg, var(--primary-color), #8A2BE2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0.3rem 0 0.8rem 0;
    text-align: center;
    line-height: 1.3;
}
.card-header p{ color: var(--dark-gray); font-size: 1rem; line-height: 1.5; margin-bottom: 0.5rem; }
/* Exam info box */
.exam-info {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: rgba(0, 122, 255, 0.05);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.exam-info h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-weight: 700;
}

.exam-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.exam-info li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
    color: var(--text-color);
    font-size: 0.9rem;
}

.exam-info li i {
    color: var(--primary-color);
    width: 16px;
}

/* inputs */
.input-group{ margin-bottom: 1.25rem; }
.input-group label{ 
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight:600; 
    margin-bottom:0.5rem;
    color:var(--text-color); 
}
.input-group label i{ color: var(--primary-color); font-size: 1.1rem; }
.input-group input{
    width:100%;
    padding:1rem 1rem 1rem 2.5rem;
    border-radius:12px;
    border: 2px solid rgba(0,122,255,0.15);
    background: rgba(255,255,255,0.8);
    font-size: 1rem;
    transition: all 0.25s ease;
    position: relative;
    color: var(--text-color);
}
.input-group input:focus{
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0,122,255,0.1);
    transform: translateY(-2px);
    background: rgba(255,255,255,0.95);
}
.error-message{ color: var(--danger-color); min-height: 1.1rem; margin-top: 0.5rem; }

/* ---------- Buttons ---------- */
.btn{
    display: inline-flex;
    align-items:center;
    gap:0.6rem;
    padding: 0.8rem 1.25rem;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    position: relative;
    overflow: hidden;
}
.btn:hover{ transform: translateY(-3px); box-shadow: 0 12px 28px rgba(0,0,0,0.12); }
.btn:active{ transform: translateY(-1px) scale(0.99); }

.btn-primary{
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: #fff;
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border-radius: 12px;
    margin-top: 0.5rem;
}
.btn-primary:hover{ 
    background: linear-gradient(135deg, #0056b3, var(--primary-color));
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(0, 122, 255, 0.25);
}
.btn-secondary{
    background: rgba(255,255,255,0.88);
    color: var(--text-color);
    border: 1px solid rgba(0,122,255,0.12);
}
.btn-danger{
    background: linear-gradient(135deg, var(--danger-color), #D70015);
    color: #fff;
}
.btn-doubtful{
    background: rgba(255,255,255,0.65);
    border: 2px solid var(--warning-color);
    color: var(--warning-color);
}
.btn-doubtful.active{ background: var(--warning-color); color: #fff; }
.btn:disabled{ opacity: 0.5; cursor: not-allowed; transform: none; box-shadow:none; }

/* ---------- Exam header & layout ---------- */
.exam-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding: 1.25rem 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid rgba(255,255,255,0.35);
}
.exam-header h1{ font-size: 1.3rem; font-weight:800; color:var(--text-color); margin:0; }
.user-greeting{ color:var(--dark-gray); font-weight:600; font-size:0.95rem; display:block; }

.timer-box{
    background: rgba(255,255,255,0.7);
    padding: 0.6rem 1rem;
    border-radius: 10px;
    text-align:center;
    border: 1px solid rgba(0,122,255,0.12);
}
.timer-box span{ display:block; font-size:0.8rem; color:var(--dark-gray); }
.timer-box strong{ font-size:1.45rem; color:var(--primary-color); font-weight:800; }

.exam-body{ display: grid; grid-template-columns: 3fr 1fr; gap: 1.25rem; }

/* ---------- Question panel ---------- */
.question-panel{ padding: 1.25rem; background: var(--card-bg-solid); }
.question-header{ display:flex; justify-content:space-between; align-items:center; margin-bottom:1rem; border-bottom:2px solid rgba(0,122,255,0.06); padding-bottom:0.8rem; }
.question-header span{ color:var(--primary-color); font-weight:800; }
.question-content{ padding-top:1rem; }
.question-context{
    background: rgba(0,122,255,0.05);
    padding: 1rem;
    border-left: 4px solid var(--primary-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    line-height: 1.6;
    white-space: pre-wrap;
}
#question-text{ font-size:1.05rem; line-height:1.7; margin-bottom:1rem; font-weight:600; }

#options-container{ margin-top:0.5rem; }
#options-container .option{
    display:flex;
    align-items:center;
    gap:0.9rem;
    padding: 1rem 1rem;
    margin-bottom: 0.7rem;
    border-radius: 12px;
    border: 2px solid rgba(0,122,255,0.10);
    background: rgba(255,255,255,0.6);
    cursor: pointer;
    transition: all 0.2s ease;
}
#options-container .option:hover{ transform: translateX(4px); border-color: var(--primary-color); background: rgba(0,122,255,0.06); }
#options-container .option input{ width:20px; height:20px; margin:0; }
#options-container .option.selected{ border-color: var(--primary-color); background: rgba(0,122,255,0.12); box-shadow: 0 6px 18px rgba(0,122,255,0.12); }

.question-footer{ display:flex; justify-content:space-between; gap:0.5rem; margin-top:1.25rem; padding-top:1rem; border-top: 2px solid rgba(0,122,255,0.06); }

/* ---------- Navigation panel ---------- */
.navigation-panel{ padding:1rem; background: var(--card-bg-solid); display:flex; flex-direction:column; gap:1rem; }
.navigation-panel h4{ margin:0 0 0.5rem 0; font-weight:800; color:var(--text-color); }
#question-nav{ display: grid; grid-template-columns: repeat(5,1fr); gap:0.6rem; }
.nav-btn{
    width:45px; height:45px; border-radius:10px; display:flex; align-items:center; justify-content:center; cursor:pointer;
    border: 2px solid rgba(0,122,255,0.12); background: rgba(255,255,255,0.75); font-weight:800;
    transition: all 0.18s ease;
}
.nav-btn:hover{ transform: translateY(-4px) scale(1.07); border-color: var(--primary-color); box-shadow: 0 6px 18px rgba(0,122,255,0.10); }
.nav-btn.current{ background: var(--primary-color); color:#fff; border-color:var(--primary-color); transform: scale(1.12); }
.nav-btn.answered{ background: var(--success-color); color:#fff; border-color:var(--success-color); }
.nav-btn.doubtful{ background: var(--warning-color); color:#fff; border-color:var(--warning-color); }

/* ---------- Result page (REVISI) ---------- */
.result-card { 
    text-align: center; 
    max-width: 640px; 
    margin: 3.5rem auto; 
    background: var(--card-bg-solid);
    padding: 2.5rem;
}

.result-header {
    margin-bottom: 1.5rem;
}

.result-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.result-subtitle {
    color: var(--dark-gray);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.result-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.result-main {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
}

.score-circle {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: 1rem;
    transition: all 0.6s ease;
    animation: pulse 2s infinite, bounceIn 1s ease-out;
    
    /* Gradien lingkaran berdasarkan nilai */
    background: conic-gradient(
        var(--score-color) 0% var(--score-percent, 0%),
        var(--light-gray) var(--score-percent, 0%) 100%
    );
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.score-circle-inner {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
}

.score-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-color);
    line-height: 1;
    margin-bottom: 0.25rem;
    animation: countUp 1.5s ease-out;
}

.score-label {
    font-size: 1rem;
    color: var(--dark-gray);
    font-weight: 600;
}

.score-percentage {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: rgba(0,122,255,0.08);
}

.result-section {
    margin-bottom: 2rem;
    padding: 1rem;
    width: 100%;
}

.result-section h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.result-section p {
    color: var(--dark-gray);
    font-size: 1rem;
}

.result-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: rgba(0,122,255,0.04);
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
}

.stat-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    display: block;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
    font-weight: 600;
}

.result-time {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: rgba(0,122,255,0.04);
    border-radius: 12px;
    font-weight: 600;
    color: var(--text-color);
    width: 100%;
    max-width: 400px;
}

.time-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-bottom: 0.25rem;
}

.time-value {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 800;
}

.result-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
    width: 100%;
}

.result-actions .btn {
    min-width: 180px;
    flex: 1;
}

/* Warna berdasarkan nilai */
.score-circle.excellent {
    --score-color: #8A2BE2;
}

.score-circle.good {
    --score-color: #34C759;
}

.score-circle.average {
    --score-color: #FF9500;
}

.score-circle.poor {
    --score-color: #FF3B30;
}

/* Responsif */
@media (max-width: 768px) {
    .result-stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .score-circle {
        width: 150px;
        height: 150px;
    }
    
    .score-circle-inner {
        width: 120px;
        height: 120px;
    }
    
    .score-number {
        font-size: 2.5rem;
    }
}

/* ---------- Review (pembahasan dua kolom) ---------- */
.review-item{
    background: var(--card-bg-solid);
    padding:1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.35);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.review-item.two-column {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.review-left {
    border-right: 2px solid rgba(0,122,255,0.08);
    padding-right: 1rem;
}

.review-right {
    background: rgba(0,122,255,0.03);
    border-radius: 12px;
    padding: 1rem 1.25rem;
}

.review-right h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.explanation-text {
    margin: 0.5rem 0 1rem 0;
    line-height: 1.6;
    color: #333;
}

.answer-feedback {
    border-top: 2px solid rgba(0,0,0,0.05);
    padding-top: 0.75rem;
}

.answer-feedback.correct { color: var(--success-color); }
.answer-feedback.incorrect { color: var(--danger-color); }

.success-note, .error-note {
    margin-top: 0.5rem;
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
    font-weight: 600;
}

.success-note {
    background: rgba(52,199,89,0.1);
    color: var(--success-color);
}

.error-note {
    background: rgba(255,59,48,0.1);
    color: var(--danger-color);
}

/* isi kiri */
.review-question{ font-weight:700; margin-bottom:0.75rem; font-size:1rem; }
.review-answer-list{ list-style:none; padding:0; margin:0; }
.review-answer-list li{
    padding: 0.9rem 1rem;
    border-radius:10px;
    margin-bottom:0.6rem;
    display:flex;
    align-items:center;
    gap:0.6rem;
    border: 2px solid transparent;
    background: rgba(255,255,255,0.6);
}
.review-answer-list .correct{ background: rgba(52,199,89,0.12); border-color: var(--success-color); color: #0b6623; font-weight:700; }
.review-answer-list .incorrect{ background: rgba(255,59,48,0.12); border-color: var(--danger-color); color: #8b1f1f; font-weight:700; }

/* === Navigasi atas (horizontal) === */
.review-nav-top {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  padding: 0.6rem 0;
  margin-bottom: 1rem;
  -webkit-overflow-scrolling: touch;
}

.review-nav-top::-webkit-scrollbar{ height: 8px; }
.review-nav-top::-webkit-scrollbar-thumb{ background: rgba(0,0,0,0.12); border-radius: 8px; }

.review-nav-btn {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 2px solid rgba(0,122,255,0.15);
  background: rgba(255,255,255,0.95);
  font-weight: 700;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  text-align: center;
  padding: 0 0.4rem;
}

.review-nav-btn:hover { transform: translateY(-3px); box-shadow: 0 6px 18px rgba(0,0,0,0.08); }

.review-nav-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
  transform: scale(1.05);
}
.review-nav-btn.correct {
  background: var(--success-color);
  border-color: var(--success-color);
  color: #fff;
}
.review-nav-btn.incorrect {
  background: var(--danger-color);
  border-color: var(--danger-color);
  color: #fff;
}

/* Tombol bawah - HANYA SATU PASANG */
.review-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid rgba(0,122,255,0.08);
}

.review-navigation span {
  font-weight: 700;
  color: var(--primary-color);
  padding: 0 1rem;
}

.review-navigation .btn {
  min-width: 120px;
}

/* responsif dua kolom */
@media (max-width: 992px){
    .exam-body{ grid-template-columns: 1fr; }
    .navigation-panel{ order: -1; }
    #question-nav{ grid-template-columns: repeat(auto-fill,minmax(44px,1fr)); }
    .review-item.two-column { grid-template-columns: 1fr; }
    .review-left { border-right: none; padding-right: 0; }
    .review-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    .review-navigation .btn {
        width: 100%;
    }
    .result-stats-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    .result-actions {
        flex-direction: column;
    }
}

/* Responsive adjustments untuk login */
@media (max-width: 768px) {
    .login-card {
        margin: 1rem auto;
        padding: 1.5rem;
    }
    
    .card-header i {
        font-size: 2.8rem;
    }
    
    .card-header h2 {
        font-size: 1.5rem;
    }
    
    .exam-info {
        padding: 1rem;
    }
}

/* ---------- Animasi Khusus ---------- */
@keyframes fadeIn{ 
    from{ opacity:0; transform: translateY(14px); } 
    to{ opacity:1; transform: translateY(0); } 
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes countUp {
    from { 
        transform: scale(0.5); 
        opacity: 0; 
    }
    to { 
        transform: scale(1); 
        opacity: 1; 
    }
}

@keyframes confettiFall {
    0% { transform: translateY(-100px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(360deg); opacity: 0; }
}

.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background-color: #f00;
    opacity: 0;
    z-index: 9999;
    pointer-events: none;
}

.loading{
    animation: shimmer 2s infinite;
    background: linear-gradient(90deg,#f6f7f8 0%, #edeef1 20%, #f6f7f8 40%, #f6f7f8 100%);
    background-size: 1000px 100%;
}
@keyframes shimmer{ 0%{ background-position:-1000px 0; } 100%{ background-position:1000px 0; } }

/* small helpers */
.text-muted{ color:var(--dark-gray); font-size:0.92rem; }
.center{ text-align:center; }

/* ---------- Admin: Disable Animations ---------- */
body.admin-no-anim *,
body.admin-no-anim *::before,
body.admin-no-anim *::after{
    animation: none !important;
    transition: none !important;
}

body.admin-no-anim .card,
body.admin-no-anim .btn,
body.admin-no-anim .nav-btn,
body.admin-no-anim .review-nav-btn,
body.admin-no-anim .input-group input,
body.admin-no-anim .page,
body.admin-no-anim .score-circle,
body.admin-no-anim .score-number,
body.admin-no-anim .result-card,
body.admin-no-anim .result-item{
    animation: none !important;
    transition: none !important;
}

body.admin-no-anim .card:hover{
    transform: none !important;
    box-shadow: var(--shadow);
}

body.admin-no-anim .btn:hover,
body.admin-no-anim .btn:active,
body.admin-no-anim .nav-btn:hover,
body.admin-no-anim .nav-btn.current,
body.admin-no-anim .review-nav-btn:hover,
body.admin-no-anim .review-nav-btn.active,
body.admin-no-anim .input-group input:focus{
    transform: none !important;
    box-shadow: none !important;
}