/* ===================================
   ExamPredict AI - Professional Components
   Clean, Fast, Futuristic Dark Design
   =================================== */

/* ===================================
   Header - Professional Minimal
   =================================== */

.header {
    background: rgba(10, 10, 10, 0.95);
    border-bottom: 1px solid var(--color-bg-tertiary);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header .container {
    padding-left: 0 !important;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    color: white;
    box-shadow: var(--shadow-accent);
}

.header__title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
    margin: 0;
    padding: 0;
}

.header__tagline {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    font-style: italic;
    margin: 0.5rem 0 0 1rem;
    padding: 0;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.header__nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.header__nav-link {
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-weight: 500;
    font-size: var(--text-sm);
}

.header__nav-link:hover,
.header__nav-link.active {
    color: var(--color-accent);
    background: var(--color-accent-dim);
}

/* ===================================
   Professional Buttons
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-base);
    font-weight: 600;
    font-family: var(--font-body);
    border-radius: var(--radius-md);
    border: none;
    cursor: none !important;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn--secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-bg-tertiary);
}

.btn--secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

.btn--google {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: #1a1a1a;
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-weight: 700;
    font-size: var(--text-base);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.btn--google::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #4285F4 0%, #34A853 25%, #FBBC05 50%, #EA4335 75%, #4285F4 100%);
    background-size: 400% 400%;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn--google::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: calc(var(--radius-md) - 2px);
    z-index: -1;
    transition: all 0.3s ease;
}

.btn--google:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(66, 133, 244, 0.3),
                0 0 0 4px rgba(66, 133, 244, 0.1);
}

.btn--google:hover::before {
    opacity: 1;
    animation: googleGradient 3s ease infinite;
}

.btn--google:hover::after {
    opacity: 0.95;
}

.btn--google:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 5px 15px rgba(66, 133, 244, 0.2),
                0 0 0 2px rgba(66, 133, 244, 0.1);
}

.btn--google svg {
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.btn--google:hover svg {
    transform: rotate(10deg) scale(1.1);
}

@keyframes googleGradient {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--text-lg);
}

.btn--full-width {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--text-lg);
}

.btn--accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn--accent::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn--accent:hover::before {
    left: 100%;
}

.btn--accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent-glow);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn__icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   Hero Section - Bold & Professional
   =================================== */

.landing {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-3xl) 0;
}

.landing__hero {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.landing__title {
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    line-height: 1;
    color: var(--color-text-primary);
}

.landing__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

/* ===================================
   How It Works Section
   =================================== */

.how-it-works {
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid var(--color-bg-tertiary);
}

.how-it-works__title {
    text-align: center;
    font-size: var(--text-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text-primary);
}

.how-it-works__steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.step-card {
    text-align: left;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.step-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.step-card__number {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 900;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    display: block;
}

.step-card__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.step-card__description {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* ===================================
   Technology Showcase Section
   =================================== */

.technology-showcase {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.technology-showcase__content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.technology-showcase__badge {
    display: inline-block;
    background: var(--color-accent-dim);
    color: var(--color-accent);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 700;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.1em;
}

.technology-showcase__title {
    font-size: var(--text-4xl);
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.technology-showcase__description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
}

.technology-showcase__features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.tech-feature {
    padding: var(--spacing-lg);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.tech-feature:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-accent);
}

.tech-feature__icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.tech-feature__title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.tech-feature__text {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ===================================
   Upload Section
   =================================== */

.upload {
    min-height: 100vh;
    padding: var(--spacing-3xl) 0;
}

.upload__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.upload__title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.upload__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

.upload__zone {
    background: var(--color-bg-card);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl);
    text-align: center;
    cursor: none !important;
    transition: all var(--transition-fast);
}

.upload__zone:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
}

.upload__zone.dragover {
    border-color: var(--color-success);
    background: rgba(16, 185, 129, 0.05);
}

.upload__zone-content {
    position: relative;
    z-index: 1;
}

.upload__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-accent);
}

.upload__text {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload__hint {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.upload__input {
    display: none;
}

.upload__files {
    margin: var(--spacing-2xl) 0;
}

.upload__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-2xl);
}

/* File Item Card */
.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.file-item:hover {
    border-color: var(--color-accent);
}

.file-item__icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.file-item__info {
    flex: 1;
}

.file-item__name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.file-item__size {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.file-item__remove {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: none !important;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.file-item__remove:hover {
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

/* ===================================
   Question Count Selection
   =================================== */

.select-count {
    min-height: 100vh;
    padding: var(--spacing-3xl) 0;
}

.select-count__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.select-count__title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.select-count__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

.select-count__options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.count-option {
    background: var(--color-bg-card);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    font-size: var(--text-3xl);
    font-weight: 900;
    font-family: var(--font-display);
    color: var(--color-text-primary);
    cursor: none !important;
    transition: all var(--transition-fast);
}

.count-option:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.count-option.selected {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
    transform: scale(1.05);
    box-shadow: var(--shadow-accent);
}

.select-count__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* ===================================
   Processing Section
   =================================== */

.processing {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.processing__content {
    text-align: center;
    max-width: 600px;
}

.processing__spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    position: relative;
}

.processing__spinner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    border: 4px solid var(--color-bg-tertiary);
    border-top-color: var(--color-accent);
    animation: spin 0.8s linear infinite;
}

.processing__title {
    font-size: var(--text-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.processing__status {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.processing__stages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

.processing__stage {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    width: 100%;
    max-width: 300px;
}

.processing__stage.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-accent);
}

.processing__stage.completed {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

/* Progress Bar */
.processing__progress-bar {
    width: 100%;
    max-width: 400px;
    height: 8px;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto;
}

.processing__progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

.processing__counter {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    margin-top: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

/* ===================================
   Results Section
   =================================== */

.results {
    padding: var(--spacing-3xl) 0;
}

.results__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.results__header-content {
    flex: 1;
}

.results__title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.results__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

.results__actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Summary Stats */
.results__summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.summary-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.summary-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.summary-item__value {
    font-size: var(--text-4xl);
    font-weight: 900;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-xs);
}

.summary-item__value--high {
    color: var(--color-success);
}

.summary-item__value--medium {
    color: var(--color-warning);
}

.summary-item__value--low {
    color: var(--color-accent);
}

.summary-item__label {
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Question Groups */
.results__questions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.question-group {
}

.question-group__title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

/* Professional Question Cards */
.question-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
}

.question-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.question-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.question-card__badge {
    background: var(--color-accent);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

.question-card__badge--high {
    background: var(--color-success);
}

.question-card__badge--medium {
    background: var(--color-warning);
}

.question-card__badge--low {
    background: var(--color-accent);
}

.question-card__topic {
    background: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: 600;
}

.question-card__score {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.question-card__score-bar {
    width: 80px;
    height: 4px;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.question-card__score-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    transition: width 0.6s ease;
}

.question-card__question {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.question-card__options {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.question-card__option {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: none !important;
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.question-card__option:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.question-card__option.correct {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
}

.question-card__option-label {
    background: var(--color-accent);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    font-size: var(--text-sm);
}

.question-card__option.correct .question-card__option-label {
    background: var(--color-success);
}

.question-card__explanation {
    background: var(--color-bg-elevated);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.question-card__explanation strong {
    color: var(--color-accent);
    font-weight: 700;
}

/* ===================================
   Quiz/Test Mode
   =================================== */

.quiz {
    padding: var(--spacing-3xl) 0;
}

.quiz__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.quiz__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.quiz__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin: var(--spacing-sm) 0 0 0;
}

.quiz__progress {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.quiz__score {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-accent);
    white-space: nowrap;
}

.quiz__progress-bar {
    flex: 1;
    height: 8px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.quiz__progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-success));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.quiz__questions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.quiz__card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.quiz__card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.quiz__card--answered {
    border-color: var(--color-success);
}

.quiz__card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.quiz__question-number {
    font-weight: 700;
    color: var(--color-accent);
    font-size: var(--text-lg);
}

.quiz__likelihood {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
}

.quiz__likelihood--high {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.quiz__likelihood--medium {
    background: rgba(251, 191, 36, 0.1);
    color: var(--color-warning);
}

.quiz__likelihood--low {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.quiz__question {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.quiz__options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.quiz__option {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.quiz__option:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-secondary);
}

.quiz__option--selected {
    border-color: var(--color-accent);
    background: rgba(239, 68, 68, 0.05);
}

.quiz__option--correct {
    border-color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
}

.quiz__option--incorrect {
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

.quiz__option-key {
    font-weight: 700;
    color: var(--color-accent);
    min-width: 30px;
}

.quiz__option-value {
    flex: 1;
    color: var(--color-text-primary);
}

.quiz__answer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-bg-tertiary);
}

.quiz__answer-reveal {
    animation: slideDown 0.3s ease;
}

.quiz__correct-answer {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--color-success);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.quiz__correct-answer strong {
    color: var(--color-success);
}

.quiz__explanation {
    background: var(--color-bg-elevated);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
}

.quiz__explanation strong {
    color: var(--color-accent);
}

.quiz__card-footer {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Quiz Feedback */
.quiz__feedback {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
    animation: slideDown 0.3s ease;
}

.quiz__feedback-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.quiz__feedback-title--correct {
    color: var(--color-success);
}

.quiz__feedback-title--incorrect {
    color: var(--color-error);
}

.quiz__answer-info {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.quiz__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-bg-tertiary);
}

/* Quiz Results */
.quiz__results {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.quiz__results-header {
    background: var(--color-bg-card);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-accent-glow);
}

.quiz__results-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    color: var(--color-accent);
}

.quiz__score-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quiz__score-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-accent);
}

.quiz__score-divider {
    font-size: 3rem;
    color: var(--color-text-secondary);
}

.quiz__score-total {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.quiz__score-percentage {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-success);
}

.quiz__results-message {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}

.quiz__results-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.quiz__stat {
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    min-width: 120px;
}

.quiz__stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.quiz__stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.quiz__results-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Results CTA */
.results__test-cta {
    margin: var(--spacing-2xl) 0;
    text-align: center;
}

/* ===================================
   Modal / Popup
   =================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.modal__content {
    position: relative;
    background: var(--color-bg-card);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    max-width: 1400px;
    width: 98%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-accent-glow);
    z-index: 1;
}

.modal__header {
    margin-bottom: var(--spacing-lg);
}

.modal__title {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-accent);
    margin: 0;
}

.modal__body {
    margin-bottom: var(--spacing-xl);
}

.modal__text {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.modal__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ===================================
   Authentication Modal - Custom Styling
   =================================== */

.modal__close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 32px;
    height: 32px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal__close:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
    transform: rotate(90deg);
}

.auth__tabs {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    background: var(--color-bg-elevated);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
}

.auth__tab {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    font-weight: 600;
    font-family: var(--font-body);
    cursor: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.auth__tab:hover {
    color: var(--color-accent);
    background: var(--color-accent-dim);
}

.auth__tab.active {
    background: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-md);
}

.auth__status {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    border-left: 3px solid currentColor;
}

.auth__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.auth__form .form-group {
    margin-bottom: 0;
}

.auth__form .form-label {
    display: block;
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-sm);
}

.auth__form .form-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    font-family: var(--font-body);
    transition: all var(--transition-fast);
}

.auth__form .form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.auth__form .form-input::placeholder {
    color: var(--color-text-muted);
}

/* Signup Form Two-Column Layout */
.signup-form__fields {
    display: flex;
    flex-direction: column;
}

.signup-form__actions {
    display: flex;
    flex-direction: column;
}

/* Responsive: Stack vertically on mobile */
@media (max-width: 768px) {
    .signup-form__fields,
    .signup-form__actions {
        width: 100%;
    }

    #signupForm > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-lg) !important;
    }

    .signup-form__actions div[style*="sticky"] {
        position: static !important;
    }
}

/* ===================================
   Header Auth Controls
   =================================== */

.header__auth-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
    padding-left: var(--spacing-xl);
    border-left: 1px solid var(--color-bg-tertiary);
}

.header__user-info {
    text-align: right;
}

.header__user-email {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    font-weight: 600;
}

.header__user-badge {
    display: inline-block;
    background: var(--color-accent-dim);
    color: var(--color-accent);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
    margin-left: var(--spacing-xs);
}

.header__usage-counter {
    display: inline-block;
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    margin-left: var(--spacing-sm);
    border: 1px solid var(--color-border);
}

.header__auth-controls .btn--secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-sm);
}

/* ===================================
   Documentation Page
   =================================== */

.documentation__content {
    max-width: 900px;
    margin: 0 auto;
}

.doc-section {
    background: var(--color-bg-card);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.doc-section:hover {
    border-color: var(--color-accent);
}

.doc-section__title {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.doc-section__content {
    color: var(--color-text-secondary);
}

.doc-section__content h4 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.doc-section__content p {
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.doc-section__content ul {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.doc-section__content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-bg-tertiary);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer__text {
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}



/* ============================================================
   UPGRADE MODAL STYLES
   ============================================================ */

.upgrade-modal {
	max-width: 700px !important;
	width: 90%;
	background: var(--color-bg-elevated);
}

.upgrade-modal__hero {
	text-align: center;
	padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-md);
}

.upgrade-modal__title {
	font-size: 40px;
	font-weight: 800;
	color: var(--color-text-primary);
	margin-bottom: var(--spacing-sm);
}

.upgrade-modal__subtitle {
	font-size: 14px;
	color: var(--color-text-secondary);
	line-height: 1.5;
}

.upgrade-modal__highlight {
	background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
	padding: var(--spacing-sm) var(--spacing-lg);
	margin: 0 var(--spacing-xl) var(--spacing-md);
	border-radius: 50px;
	text-align: center;
}

.upgrade-modal__highlight-text {
	color: white;
	font-size: 13px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.upgrade-modal__plans {
	display: flex;
	gap: var(--spacing-xl);
	padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.plan-card {
	background: var(--color-bg-card);
	border: 2px solid var(--color-border);
	border-radius: var(--radius-lg);
	flex: 1;
	min-height: 500px;
	position: relative;
	transition: all 0.3s ease;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	padding: 0;
}

.plan-card:hover {
	transform: translateY(-3px);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.plan-card:hover {
	transform: translateY(-3px);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.plan-card--free {
	opacity: 0.7;
}

.plan-card--pro {
	border-color: var(--color-accent);
	background: var(--color-bg-card);
	box-shadow: 0 6px 20px rgba(234, 83, 83, 0.15);
}

.plan-card__ribbon {
	position: absolute;
	top: 20px;
	right: -30px;
	background: var(--color-border);
	color: var(--color-text-secondary);
	font-size: 10px;
	font-weight: 800;
	padding: 6px 40px;
	transform: rotate(45deg);
	text-transform: uppercase;
	letter-spacing: 1px;
}

.plan-card__ribbon--popular {
	background: linear-gradient(135deg, var(--color-accent) 0%, #ff6b6b 100%);
	color: white;
}

.plan-card__header {
	text-align: center;
	padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
	border-bottom: 1px solid var(--color-border);
	position: relative;
}

.plan-card__badge-top {
	position: absolute;
	top: 12px;
	left: 50%;
	transform: translateX(-50%);
	background: linear-gradient(135deg, #ffa500 0%, #ff6b6b 100%);
	color: white;
	font-size: 10px;
	font-weight: 800;
	padding: 6px 16px;
	border-radius: 20px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.plan-card__name {
	font-size: 20px;
	font-weight: 800;
	color: var(--color-text-primary);
	margin-bottom: var(--spacing-xs);
}

.plan-card__price {
	font-size: 32px;
	font-weight: 900;
	color: var(--color-text-primary);
}

.plan-card--pro .plan-card__price {
	background: linear-gradient(135deg, var(--color-accent) 0%, #ff6b6b 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.plan-card__price span {
	font-size: 14px;
	font-weight: 500;
	color: var(--color-text-secondary);
}

.plan-card__features {
	display: flex;
	flex-direction: column;
	gap: var(--spacing-sm);
	padding: var(--spacing-lg);
	flex: 1;
}

.plan-card__feature {
	font-size: 13px;
	color: var(--color-text-primary);
	padding: 6px 0;
	line-height: 1.4;
}

.plan-card__feature--disabled {
	opacity: 0.4;
	text-decoration: line-through;
}

.plan-card__feature--highlight {
	background: linear-gradient(135deg, rgba(234, 83, 83, 0.1) 0%, rgba(234, 83, 83, 0.05) 100%);
	padding: 8px 12px;
	border-radius: var(--radius-sm);
	font-weight: 700;
	border: 1px solid rgba(234, 83, 83, 0.3);
}

.plan-card__badge {
	position: absolute;
	bottom: 12px;
	right: 12px;
	background: var(--color-border);
	color: var(--color-text-secondary);
	font-size: 9px;
	font-weight: 700;
	padding: 4px 10px;
	border-radius: 10px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.plan-card__cta {
	width: calc(100% - var(--spacing-2xl));
	margin: 0 var(--spacing-lg) var(--spacing-lg);
	background: linear-gradient(135deg, var(--color-accent) 0%, #ff6b6b 100%);
	color: white;
	border: none;
	padding: var(--spacing-md);
	border-radius: var(--radius-md);
	font-size: 15px;
	font-weight: 800;
	cursor: pointer;
	transition: all 0.3s ease;
	box-shadow: 0 4px 15px rgba(234, 83, 83, 0.4);
}

.plan-card__cta:hover {
	transform: translateY(-2px);
	box-shadow: 0 6px 20px rgba(234, 83, 83, 0.5);
}

/* Responsive */
@media (max-width: 650px) {
	.upgrade-modal {
		width: 95%;
	}

	.upgrade-modal__plans {
		flex-direction: column;
	}

	.upgrade-modal__title {
		font-size: 20px;
	}

	.plan-card__price {
		font-size: 28px;
	}
}