/* ===== Simulation Styles - Apple/iOS Design ===== */

/* Animations */
@keyframes slideUpFade {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.96);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes press {
    0% {
        transform: scale(1);
    }

    40% {
        transform: scale(0.96);
    }

    100% {
        transform: scale(1);
    }
}

/* Base Layout */
.simulation-config {
    max-width: 900px;
    margin: 0 auto;
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
    padding-bottom: 40px;
}

/* Header */
.ios-header {
    text-align: center;
    margin-bottom: 40px;
}

.ios-title {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

[data-theme="light"] .ios-title {
    background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-tertiary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ios-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Bento Grid */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: auto auto;
    gap: 20px;
}

/* Grid Spans */
.bento-card.large {
    grid-column: span 8;
}

.bento-card.medium {
    grid-column: span 4;
}

.bento-card.tall {
    grid-column: span 4;
    grid-row: span 2;
}

/* Side column */
.bento-card.full {
    grid-column: span 12;
}

.bento-action {
    grid-column: span 12;
    margin-top: 10px;
}

/* Bento Card Style */
.bento-card {
    background: var(--glass-material);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 28px;
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

/* Light theme: switch Apple-glass cards to M3 surface containers */
[data-theme="light"] .bento-card,
[data-theme="light"] .sim-exam-header,
[data-theme="light"] .sim-question-nav,
[data-theme="light"] .sim-question-container,
[data-theme="light"] .sim-nav-btn {
    background: var(--md-surface-container) !important;
    border: 1px solid var(--md-outline-variant) !important;
    box-shadow: var(--md-shadow-1) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

[data-theme="light"] .sim-exam-progress .progress-bar {
    background: var(--md-surface-container-high);
}

[data-theme="light"] .q-nav-btn {
    background: var(--md-surface-container-low);
    border: 1px solid var(--md-outline-variant);
    color: var(--md-on-surface-variant);
}

[data-theme="light"] .q-nav-btn:hover {
    background: var(--md-surface-container-high);
}

.bento-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .bento-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--md-shadow-2);
    border-color: var(--md-outline);
}

.bento-card h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.sub-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
    display: block;
}

/* Card Icons */
.card-icon-bg {
    position: absolute;
    top: -20px;
    right: -20px;
    font-size: 120px;
    opacity: 0.05;
    pointer-events: none;
    filter: blur(2px);
    transform: rotate(15deg);
}

/* iOS Stepper */
.ios-stepper {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 6px;
    margin-top: 16px;
    gap: 8px;
}

[data-theme="light"] .ios-stepper {
    background: var(--md-surface-container-high);
    border: 1px solid var(--md-outline-variant);
}

.ios-stepper input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    width: 60px;
    outline: none;
}

.stepper-btn {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .stepper-btn {
    background: var(--md-surface-container-highest);
    color: var(--md-on-surface);
}

.stepper-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .stepper-btn:hover {
    background: var(--md-surface-container-high);
}

.stepper-btn:active {
    transform: scale(0.9);
}

/* Time Selector */
.time-selector {
    margin-top: auto;
}

input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
    margin-top: 10px;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 28px;
    width: 28px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    margin-top: -12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
}

.time-display {
    font-size: 24px;
    font-weight: 700;
    display: block;
    margin-top: 10px;
    color: var(--text-primary);
}

/* iOS List (Switches) */
.ios-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 16px;
}

.ios-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ios-item:last-child {
    border-bottom: none;
}

.ios-label {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.ios-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 30px;
}

.ios-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.15);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input:checked+.slider {
    background-color: var(--correct);
}

input:checked+.slider:before {
    transform: translateX(20px);
}

/* Distribution */
.distribution-card {
    min-height: auto;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.badge-soft {
    padding: 4px 12px;
    background: rgba(124, 58, 237, 0.2);
    color: #a78bfa;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
}

.dist-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dist-input input {
    background: rgba(0, 0, 0, 0.2);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    width: 50px;
    padding: 6px;
    text-align: center;
    font-weight: 600;
}

/* Action Button */
.ios-btn-primary {
    width: 100%;
    padding: 20px;
    border: none;
    border-radius: 20px;
    background: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    /* Apple Blue to Indigo */
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 122, 255, 0.4);
    transition: all 0.3s cubic-bezier(0.3, 1.5, 0.5, 1);
}

.ios-btn-primary:active {
    transform: scale(0.97);
}

/* Media Queries */
@media (max-width: 768px) {
    .bento-grid {
        display: flex;
        flex-direction: column;
    }

    .bento-card {
        grid-column: span 12 !important;
    }
}

/* ===== Exam Interface (Inherited + Enhanced) ===== */
.sim-exam-progress .progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.sim-exam-progress .progress-fill {
    background: #34C759;
    /* Apple Green */
    box-shadow: 0 0 10px rgba(52, 199, 89, 0.5);
}

.sim-question-container {
    background: rgba(30, 30, 40, 0.5) !important;
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px !important;
}

.option {
    border-radius: 16px !important;
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.option.selected {
    background: rgba(10, 132, 255, 0.15) !important;
    border-color: #0A84FF !important;
}

/* ===== Exam Interface (Inherited + Enhanced) ===== */

/* Header & Timer */
.sim-exam-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--glass-material);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    margin-bottom: 24px;
    position: sticky;
    top: 80px;
    z-index: 100;
    box-shadow: var(--glass-shadow);
}

.sim-timer {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 16px;
    border-radius: 12px;
}

[data-theme="light"] .sim-timer {
    background: var(--md-surface-container-high);
    border: 1px solid var(--md-outline-variant);
}

.timer-value {
    font-family: monospace;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.sim-progress-info {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Submit Button */
.sim-submit-btn {
    padding: 10px 20px;
    background: var(--incorrect);
    /* Red for end exam */
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.sim-submit-btn:hover {
    transform: scale(1.05);
}

/* Question Nav Grid */
.sim-question-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px;
    background: var(--glass-material);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    margin-bottom: 24px;
    max-height: 200px;
    overflow-y: auto;
}

.q-nav-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.q-nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.q-nav-btn.current {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.q-nav-btn.answered {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.q-nav-btn.correct {
    background: var(--correct);
    color: white;
    border-color: var(--correct);
}

.q-nav-btn.incorrect {
    background: var(--incorrect);
    color: white;
    border-color: var(--incorrect);
}

.q-nav-btn.skipped {
    border-color: var(--warning);
    color: var(--warning);
}

/* Progress Bar */
.sim-exam-progress {
    margin-bottom: 24px;
}

.sim-exam-progress .progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.sim-exam-progress .progress-fill {
    height: 100%;
    background: #34C759;
    /* Apple Green */
    box-shadow: 0 0 10px rgba(52, 199, 89, 0.5);
    transition: width 0.3s ease;
}

/* Question Container */
.sim-question-container {
    background: var(--glass-material) !important;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 24px !important;
    padding: 24px;
    margin-bottom: 24px;
}

.question-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 24px;
    color: var(--text-primary);
}

/* Options */
.option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    margin-bottom: 12px;
    border-radius: 16px !important;
    background: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid rgba(255, 255, 255, 0.05) !important;
    cursor: pointer;
    transition: all 0.2s;
}

[data-theme="light"] .option {
    background: var(--md-surface-container-low) !important;
    border: 1px solid var(--md-outline-variant) !important;
}

.option:hover {
    background: rgba(255, 255, 255, 0.08) !important;
}

[data-theme="light"] .option:hover {
    background: var(--md-surface-container-high) !important;
}

.option.selected {
    background: rgba(10, 132, 255, 0.15) !important;
    border-color: #0A84FF !important;
}

[data-theme="light"] .option.selected {
    background: color-mix(in srgb, var(--md-primary) 12%, var(--md-surface-container-high)) !important;
    border-color: var(--md-primary) !important;
}

.option-letter {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    color: var(--text-secondary);
}

[data-theme="light"] .option-letter {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

.option.selected .option-letter {
    background: #0A84FF;
    color: white;
}

[data-theme="light"] .option.selected .option-letter {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

/* Nav Buttons (Next/Prev) */
.sim-nav-buttons {
    display: flex;
    gap: 16px;
}

.sim-nav-btn {
    flex: 1;
    padding: 16px;
    background: var(--glass-material);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.sim-nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.sim-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Result Screen Enhancements */
.simulation-result h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}