/**
 * ============================================
 * RATIO-AI - Stili Questionario
 * ============================================
 * 
 * Layout e stili specifici per il questionario interattivo.
 * Design one-question-per-page con transizioni fluide.
 */

/* ============================================
   BACKGROUND ANIMATO
   ============================================ */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
    background: var(--gray-900);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-600);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary-600);
    bottom: -150px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-600);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.05);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

/* ============================================
   CONTAINER PRINCIPALE
   ============================================ */
.questionnaire-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-4);
    max-width: 800px;
    margin: 0 auto;
    overflow-x: hidden;
}

/* Nasconde scrollbar globale durante il questionario */
body:has(.questionnaire-container) {
    overflow-x: hidden;
}

body:has(.questionnaire-container)::-webkit-scrollbar {
    width: 0;
    background: transparent;
}

/* Fallback per browser che non supportano :has() */
.questionnaire-page {
    overflow-x: hidden;
}

.questionnaire-page::-webkit-scrollbar {
    width: 0;
    background: transparent;
}

@media (min-width: 768px) {
    .questionnaire-container {
        padding: var(--spacing-8);
    }
}

/* ============================================
   HEADER
   ============================================ */
.questionnaire-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    margin-bottom: var(--spacing-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
}

/* Progress bar */
.progress-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.progress-bar {
    width: 120px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

@media (min-width: 768px) {
    .progress-bar {
        width: 200px;
    }
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-text {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-400);
    min-width: 40px;
    text-align: right;
}

/* ============================================
   FORM QUESTIONARIO
   ============================================ */
.questionnaire-form {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* Nasconde scrollbar ma permette scroll se necessario */
.questionnaire-form::-webkit-scrollbar {
    display: none;
}

.questionnaire-form {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* ============================================
   QUESTION SLIDES
   ============================================ */
.question-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateX(50px);
    transition: all var(--transition-slow);
}

.question-slide.active {
    position: relative;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.question-slide.exit-left {
    transform: translateX(-50px);
}

.question-slide.enter-right {
    transform: translateX(50px);
}

/* ============================================
   SLIDE CONTENT
   ============================================ */
.slide-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-6) var(--spacing-2);
    overflow: hidden;
}

/* Nasconde scrollbar sugli slide */
.slide-content::-webkit-scrollbar,
.slide::-webkit-scrollbar {
    display: none;
}

.slide-content,
.slide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

@media (min-width: 480px) {
    .slide-content {
        padding: var(--spacing-6) var(--spacing-4);
    }
}

/* Section header */
.section-header {
    margin-bottom: var(--spacing-8);
    padding-bottom: var(--spacing-6);
    padding-left: var(--spacing-1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.section-number {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-400);
    background: rgba(99, 102, 241, 0.15);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-3);
}

.section-title {
    font-size: var(--font-size-2xl);
    color: white;
    margin-bottom: var(--spacing-2);
}

.section-description {
    font-size: var(--font-size-base);
    color: var(--gray-400);
    margin-bottom: 0;
}

/* Question number */
.question-number {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-1);
}

.question-number .current {
    color: var(--primary-400);
    font-weight: 600;
}

/* Question label */
.question-label {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-3);
    line-height: 1.4;
    padding-left: var(--spacing-1);
}

@media (min-width: 768px) {
    .question-label {
        font-size: var(--font-size-2xl);
    }
}

.required-indicator {
    color: var(--error-400);
    margin-left: var(--spacing-1);
}

/* Question hint */
.question-hint {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--gray-400);
    margin-bottom: var(--spacing-6);
    line-height: 1.5;
}

.hint-icon {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--gray-500);
}

/* Input wrapper */
.input-wrapper {
    margin-bottom: var(--spacing-4);
}

/* Error message */
.error-message {
    min-height: 24px;
    font-size: var(--font-size-sm);
    color: var(--error-400);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.error-message.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   NAVIGATION
   ============================================ */
.slide-navigation {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-6) 0;
    margin-top: auto;
}

.btn-prev,
.btn-next {
    min-width: 140px;
}

@media (max-width: 480px) {
    .btn-prev,
    .btn-next {
        min-width: auto;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .btn-prev span,
    .btn-next span {
        display: none;
    }
}

/* ============================================
   WELCOME SCREEN
   ============================================ */
.welcome-content {
    text-align: center;
    padding: var(--spacing-8) 0;
}

.welcome-icon {
    margin-bottom: var(--spacing-6);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.6));
    }
}

.welcome-title {
    font-size: var(--font-size-2xl);
    color: white;
    margin-bottom: var(--spacing-4);
    line-height: 1.3;
}

@media (min-width: 768px) {
    .welcome-title {
        font-size: var(--font-size-3xl);
    }
}

.welcome-description {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    max-width: 500px;
    margin: 0 auto var(--spacing-8);
}

.welcome-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--gray-300);
}

.feature-icon {
    font-size: var(--font-size-lg);
}

/* ============================================
   COMPLETION SCREEN
   ============================================ */
.completion-content {
    text-align: center;
    padding: var(--spacing-8) 0;
}

.completion-animation {
    margin-bottom: var(--spacing-6);
}

.checkmark {
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.checkmark-circle {
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    animation: draw-circle 0.6s ease-out forwards;
}

.checkmark-check {
    stroke-dasharray: 50;
    stroke-dashoffset: 50;
    animation: draw-check 0.4s ease-out 0.4s forwards;
}

@keyframes draw-circle {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes draw-check {
    to {
        stroke-dashoffset: 0;
    }
}

.completion-title {
    font-size: var(--font-size-2xl);
    color: white;
    margin-bottom: var(--spacing-4);
}

.completion-description {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    max-width: 500px;
    margin: 0 auto var(--spacing-6);
}

/* Processing status */
.processing-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-6);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-6);
}

.processing-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.processing-text {
    color: var(--primary-400);
    font-weight: 500;
}

.completion-info {
    padding: var(--spacing-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-lg);
}

.completion-info p {
    color: var(--gray-300);
    margin-bottom: var(--spacing-2);
}

.completion-info p:last-child {
    margin-bottom: 0;
}

.completion-note {
    font-size: var(--font-size-sm);
    color: var(--gray-500) !important;
}

/* ============================================
   FOOTER
   ============================================ */
.questionnaire-footer {
    padding: var(--spacing-6) 0;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.footer-link {
    color: var(--gray-400);
    text-decoration: underline;
}

.footer-link:hover {
    color: var(--primary-400);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */
@media (max-height: 700px) {
    .welcome-content,
    .completion-content {
        padding: var(--spacing-4) 0;
    }
    
    .welcome-icon,
    .completion-animation {
        margin-bottom: var(--spacing-4);
    }
    
    .welcome-icon svg,
    .checkmark {
        width: 60px;
        height: 60px;
    }
}

/* ============================================
   SPECIFIC INPUT STYLES
   ============================================ */

/* Range group (multiple sliders) */
.range-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.range-group-item {
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.range-group-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3);
}

.range-group-label span:first-child {
    color: var(--gray-300);
    font-size: var(--font-size-sm);
}

.range-group-value {
    font-weight: 600;
    color: var(--primary-400);
    min-width: 60px;
    text-align: right;
}

/* Ranking (sortable list) */
.ranking-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    cursor: grab;
    transition: all var(--transition-base);
    user-select: none;
}

.ranking-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.ranking-item.dragging {
    opacity: 0.5;
    transform: scale(1.02);
    cursor: grabbing;
}

.ranking-item.drag-over {
    border-color: var(--primary-500);
    background: rgba(99, 102, 241, 0.1);
}

.ranking-handle {
    color: var(--gray-500);
    flex-shrink: 0;
}

.ranking-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    flex-shrink: 0;
}

.ranking-text {
    flex: 1;
    color: var(--gray-200);
}

/* Other option text input */
.other-option-input {
    margin-top: var(--spacing-3);
    padding-left: var(--spacing-10);
}

.other-option-input .form-input {
    font-size: var(--font-size-sm);
}