/**
 * Smart Reco Scie - Premium Design
 * Glassmorphism + Micro-interactions + Professional Look
 */

:root {
    --srs-primary: #1e293b;
    --srs-primary-rgb: 30, 41, 59;
    --srs-secondary: #0f172a;
    --srs-accent: #6366f1;
    --srs-accent-rgb: 99, 102, 241;
    --srs-accent-light: #818cf8;
    --srs-accent-glow: rgba(99, 102, 241, 0.4);
    --srs-success: #10b981;
    --srs-success-rgb: 16, 185, 129;
    --srs-warning: #f59e0b;
    --srs-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #f59e0b 100%);
    --srs-error: #ef4444;
    --srs-bg: #f1f5f9;
    --srs-card: #ffffff;
    --srs-text: #1e293b;
    --srs-text-secondary: #64748b;
    --srs-text-muted: #94a3b8;
    --srs-border: rgba(148, 163, 184, 0.2);
    --srs-glass: rgba(255, 255, 255, 0.7);
    --srs-glass-border: rgba(255, 255, 255, 0.3);
    --srs-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --srs-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --srs-shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --srs-shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --srs-shadow-glow: 0 0 30px var(--srs-accent-glow);
    --srs-radius: 16px;
    --srs-radius-lg: 24px;
    --srs-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --srs-transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Base Container */
.srs-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px 16px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Premium Intro Header */
.srs-intro {
    position: relative;
    text-align: center;
    margin-bottom: 32px;
    padding: 32px 24px;
    background: linear-gradient(135deg, var(--srs-primary) 0%, #334155 50%, var(--srs-secondary) 100%);
    border-radius: var(--srs-radius-lg);
    color: #fff;
    overflow: hidden;
    box-shadow: var(--srs-shadow-lg);
}

.srs-intro::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: srsShimmer 15s linear infinite;
}

@keyframes srsShimmer {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.srs-intro h3 {
    position: relative;
    margin: 0 0 12px;
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.srs-intro p {
    position: relative;
    margin: 0;
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Form */
.srs-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Question Block - Premium Card */
.srs-question-block {
    position: relative;
    background: var(--srs-card);
    border: 1px solid var(--srs-border);
    border-radius: var(--srs-radius-lg);
    padding: 24px;
    transition: var(--srs-transition);
    box-shadow: var(--srs-shadow);
}

.srs-question-block::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--srs-radius-lg);
    padding: 2px;
    background: linear-gradient(135deg, transparent, transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: var(--srs-transition);
}

.srs-question-block:hover {
    transform: translateY(-2px);
    box-shadow: var(--srs-shadow-md);
}

.srs-question-block.active {
    border-color: var(--srs-accent);
    box-shadow: var(--srs-shadow-md), 0 0 0 4px rgba(var(--srs-accent-rgb), 0.1);
}

.srs-question-block.active::before {
    background: linear-gradient(135deg, var(--srs-accent), var(--srs-accent-light));
    opacity: 1;
}

.srs-question-block.answered {
    border-color: var(--srs-success);
    background: linear-gradient(to bottom, rgba(var(--srs-success-rgb), 0.05), var(--srs-card));
}

.srs-question-block.answered::before {
    background: linear-gradient(135deg, var(--srs-success), #34d399);
    opacity: 1;
}

.srs-question-block.needs-attention {
    animation: srsPulseAttention 0.6s ease;
}

@keyframes srsPulseAttention {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); box-shadow: var(--srs-shadow-lg), 0 0 0 6px rgba(var(--srs-accent-rgb), 0.2); }
}

/* Question Header */
.srs-question-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.srs-question-number {
    position: relative;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--srs-primary), var(--srs-secondary));
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: var(--srs-shadow-sm);
    transition: var(--srs-transition);
}

.srs-question-block.answered .srs-question-number {
    background: linear-gradient(135deg, var(--srs-success), #34d399);
}

.srs-question-block.answered .srs-question-number::after {
    content: '✓';
    font-size: 1rem;
}

.srs-question-block.answered .srs-question-number span {
    display: none;
}

.srs-question-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.srs-question-title {
    flex: 1;
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--srs-text);
    letter-spacing: -0.01em;
}

/* Options Grid */
.srs-options-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Option Buttons - Premium Style */
.srs-option-btn {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 16px 18px;
    background: var(--srs-bg);
    border: 2px solid transparent;
    border-radius: var(--srs-radius);
    cursor: pointer;
    transition: var(--srs-transition);
    text-align: left;
    overflow: hidden;
}

.srs-option-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(var(--srs-accent-rgb), 0.1), rgba(var(--srs-accent-rgb), 0.05));
    opacity: 0;
    transition: var(--srs-transition);
}

.srs-option-btn:hover {
    background: var(--srs-card);
    border-color: rgba(var(--srs-accent-rgb), 0.3);
    transform: translateX(4px);
    box-shadow: var(--srs-shadow);
}

.srs-option-btn:hover::before {
    opacity: 1;
}

.srs-option-btn:active {
    transform: translateX(2px) scale(0.99);
}

.srs-option-btn.selected {
    background: var(--srs-card);
    border-color: var(--srs-accent);
    box-shadow: var(--srs-shadow-md), 0 0 0 4px rgba(var(--srs-accent-rgb), 0.15);
}

.srs-option-btn.selected::before {
    opacity: 1;
}

.srs-option-btn.selected .srs-option-check {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

/* Option Icon */
.srs-option-icon {
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--srs-card);
    border-radius: 14px;
    font-size: 1.4rem;
    margin-right: 14px;
    flex-shrink: 0;
    transition: var(--srs-transition-bounce);
    box-shadow: var(--srs-shadow-sm);
}

.srs-option-btn:hover .srs-option-icon {
    transform: scale(1.05);
}

.srs-option-btn.selected .srs-option-icon {
    background: linear-gradient(135deg, var(--srs-accent), var(--srs-accent-light));
    box-shadow: var(--srs-shadow), 0 4px 15px rgba(var(--srs-accent-rgb), 0.3);
    transform: scale(1.1);
}

/* Option Content */
.srs-option-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.srs-option-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--srs-text);
    margin-bottom: 2px;
    transition: var(--srs-transition);
}

.srs-option-btn.selected .srs-option-label {
    color: var(--srs-accent);
}

.srs-option-sublabel {
    font-size: 0.8rem;
    color: var(--srs-text-secondary);
}

/* Option Check */
.srs-option-check {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--srs-success), #34d399);
    color: #fff;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    opacity: 0;
    transform: scale(0.5) rotate(-180deg);
    transition: var(--srs-transition-bounce);
    flex-shrink: 0;
    margin-left: 10px;
    box-shadow: 0 4px 10px rgba(var(--srs-success-rgb), 0.3);
}

/* Submit Wrapper */
.srs-submit-wrapper {
    position: sticky;
    bottom: 16px;
    z-index: 100;
    text-align: center;
    padding: 20px;
    margin: 12px -16px 0;
    background: linear-gradient(to top, var(--srs-bg) 60%, transparent);
}

.srs-submit-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 420px;
    padding: 18px 36px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--srs-text-muted), var(--srs-text-secondary));
    border: none;
    border-radius: var(--srs-radius);
    cursor: not-allowed;
    transition: var(--srs-transition);
    box-shadow: var(--srs-shadow);
    overflow: hidden;
    letter-spacing: -0.01em;
}

.srs-submit-btn::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 ease;
}

.srs-submit-btn:not(:disabled) {
    background: linear-gradient(135deg, var(--srs-accent), var(--srs-accent-light));
    cursor: pointer;
    box-shadow: var(--srs-shadow-md), 0 8px 25px rgba(var(--srs-accent-rgb), 0.3);
}

.srs-submit-btn:not(:disabled):hover {
    transform: translateY(-3px);
    box-shadow: var(--srs-shadow-lg), 0 12px 35px rgba(var(--srs-accent-rgb), 0.4);
}

.srs-submit-btn:not(:disabled):hover::before {
    left: 100%;
}

.srs-submit-btn:not(:disabled):active {
    transform: translateY(-1px);
}

.srs-btn-icon {
    font-size: 1.4rem;
}

.srs-submit-hint {
    margin: 12px 0 0;
    font-size: 0.85rem;
    color: var(--srs-text-secondary);
    font-weight: 500;
}

.srs-submit-btn:not(:disabled) + .srs-submit-hint {
    color: var(--srs-accent);
}

/* Loading Inline */
.srs-loading-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 24px;
    background: var(--srs-card);
    border: 2px solid var(--srs-accent);
    border-radius: var(--srs-radius-lg);
    margin-top: 20px;
    box-shadow: var(--srs-shadow-md), var(--srs-shadow-glow);
}

.srs-loading-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(var(--srs-accent-rgb), 0.2);
    border-top-color: var(--srs-accent);
    border-radius: 50%;
    animation: srsSpin 0.8s linear infinite;
}

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

.srs-loading-text {
    color: var(--srs-text);
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

/* ========================================
   RESULTS SECTION - PREMIUM
   ======================================== */

.srs-results {
    margin-top: 28px;
    animation: srsSlideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes srsSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.srs-results-header {
    position: relative;
    text-align: center;
    margin-bottom: 24px;
    padding: 28px 24px;
    background: linear-gradient(135deg, var(--srs-success), #059669);
    border-radius: var(--srs-radius-lg);
    color: #fff;
    overflow: hidden;
    box-shadow: var(--srs-shadow-lg), 0 8px 30px rgba(var(--srs-success-rgb), 0.3);
}

.srs-results-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
}

.srs-results-header h3 {
    position: relative;
    margin: 0 0 8px;
    font-size: 1.5rem;
    font-weight: 800;
}

.srs-results-header .srs-results-intro {
    position: relative;
    margin: 0;
    font-size: 0.95rem;
    opacity: 0.95;
}

/* Recommendation Items */
.srs-recommendation-item {
    position: relative;
    margin-bottom: 20px;
    background: var(--srs-card);
    border: 1px solid var(--srs-border);
    border-radius: var(--srs-radius-lg);
    overflow: hidden;
    transition: var(--srs-transition);
    box-shadow: var(--srs-shadow);
    animation: srsSlideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.srs-recommendation-item:nth-child(1) { animation-delay: 0.1s; }
.srs-recommendation-item:nth-child(2) { animation-delay: 0.2s; }
.srs-recommendation-item:nth-child(3) { animation-delay: 0.3s; }

.srs-recommendation-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--srs-shadow-lg);
}

.srs-recommendation-item[data-rank="1"] {
    border: 2px solid transparent;
    background: linear-gradient(var(--srs-card), var(--srs-card)) padding-box,
                linear-gradient(135deg, #f59e0b, #fbbf24, #f59e0b) border-box;
    box-shadow: var(--srs-shadow-lg), 0 8px 30px rgba(245, 158, 11, 0.2);
}

/* Rank Header */
.srs-rank-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--srs-bg);
    border-bottom: 1px solid var(--srs-border);
}

.srs-recommendation-item[data-rank="1"] .srs-rank-header {
    background: linear-gradient(135deg, #fffbeb, #fef3c7);
    border-bottom-color: rgba(245, 158, 11, 0.2);
}

.srs-rank-badge {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--srs-primary), var(--srs-secondary));
    color: #fff;
    font-size: 1rem;
    font-weight: 800;
    border-radius: 12px;
    box-shadow: var(--srs-shadow);
}

.srs-recommendation-item[data-rank="1"] .srs-rank-badge {
    background: var(--srs-gold);
    color: #78350f;
    box-shadow: var(--srs-shadow), 0 4px 15px rgba(245, 158, 11, 0.4);
}

.srs-rank-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--srs-text);
}

.srs-recommendation-item[data-rank="1"] .srs-rank-label {
    color: #92400e;
}

.srs-recommendation-item[data-rank="1"] .srs-rank-label::before {
    content: '👑 ';
}

.srs-cache-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(var(--srs-success-rgb), 0.1);
    color: var(--srs-success);
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 20px;
    margin-left: auto;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Affimax Box */
.srs-affimax-box {
    padding: 20px;
}

.srs-affimax-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 140px;
    background: linear-gradient(135deg, var(--srs-bg), #e2e8f0);
    border-radius: var(--srs-radius);
    color: var(--srs-text-secondary);
    font-weight: 500;
}

/* Why Box */
.srs-why-box {
    margin: 0 20px 20px;
    padding: 16px 18px;
    background: linear-gradient(135deg, rgba(var(--srs-accent-rgb), 0.08), rgba(var(--srs-accent-rgb), 0.03));
    border-left: 4px solid var(--srs-accent);
    border-radius: 0 var(--srs-radius) var(--srs-radius) 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.srs-why-box strong {
    display: block;
    margin-bottom: 6px;
    color: var(--srs-accent);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

/* Results Footer */
.srs-results-footer {
    text-align: center;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--srs-border);
}

.srs-restart-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    color: var(--srs-primary);
    background: var(--srs-card);
    border: 2px solid var(--srs-primary);
    border-radius: var(--srs-radius);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--srs-transition);
    box-shadow: var(--srs-shadow);
}

.srs-restart-btn:hover {
    background: var(--srs-primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--srs-shadow-md);
}

/* Error State */
.srs-error {
    margin-top: 20px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.08), rgba(239, 68, 68, 0.03));
    border: 2px solid var(--srs-error);
    border-radius: var(--srs-radius-lg);
    text-align: center;
    box-shadow: var(--srs-shadow);
}

.srs-error-message {
    margin: 0 0 16px;
    color: var(--srs-error);
    font-weight: 600;
}

.srs-retry-btn {
    padding: 12px 24px;
    color: var(--srs-error);
    background: var(--srs-card);
    border: 2px solid var(--srs-error);
    border-radius: var(--srs-radius);
    font-weight: 700;
    cursor: pointer;
    transition: var(--srs-transition);
}

.srs-retry-btn:hover {
    background: var(--srs-error);
    color: #fff;
}

/* Fallback Notice */
.srs-fallback-notice {
    margin-bottom: 20px;
    padding: 14px 18px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(245, 158, 11, 0.06));
    border: 1px solid var(--srs-warning);
    border-radius: var(--srs-radius);
    font-size: 0.85rem;
    color: #92400e;
    text-align: center;
    font-weight: 500;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (min-width: 480px) {
    .srs-container {
        padding: 24px 20px;
    }
    
    .srs-intro {
        padding: 40px 32px;
    }
    
    .srs-intro h3 {
        font-size: 2rem;
    }
    
    .srs-question-block {
        padding: 28px;
    }
    
    .srs-option-btn {
        padding: 18px 20px;
    }
    
    .srs-option-icon {
        width: 54px;
        height: 54px;
        font-size: 1.5rem;
    }
}

@media (min-width: 640px) {
    .srs-options-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .srs-options-grid[data-field="features"] {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .srs-option-btn:hover {
        transform: translateY(-3px) scale(1.01);
    }
}

/* Touch devices */
@media (hover: none) {
    .srs-option-btn:active {
        transform: scale(0.98);
        background: var(--srs-card);
    }
    
    .srs-submit-btn:not(:disabled):active {
        transform: scale(0.98);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}