/* === Variables === */
:root {
    --rose-quartz: #e8b4bc;
    --blush: #f5d0d5;
    --misty-rose: #ffe4e8;
    --pearl: #fdf2f4;
    --soft-pink: #fce4ec;
    --deep-rose: #d4a5a5;
    --warm-gray: #8b7d7b;
    --soft-text: #5c4a47;
    --shadow-soft: rgba(232, 180, 188, 0.3);
    --shadow-deep: rgba(180, 130, 140, 0.2);
    --radius: 20px;
    --radius-sm: 12px;
    --transition: 0.3s ease;
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Nunito', sans-serif;
    background: linear-gradient(165deg, var(--pearl) 0%, var(--misty-rose) 35%, var(--soft-pink) 100%);
    color: var(--soft-text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* === Floating Shapes === */
.floating-shapes {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
    animation: float 15s ease-in-out infinite;
}

.shape-1 { width: 200px; height: 200px; background: var(--rose-quartz); top: 10%; left: 5%; animation-delay: 0s; }
.shape-2 { width: 120px; height: 120px; background: var(--blush); top: 60%; right: 10%; animation-delay: -3s; }
.shape-3 { width: 80px; height: 80px; background: var(--misty-rose); bottom: 20%; left: 15%; animation-delay: -6s; }
.shape-4 { width: 150px; height: 150px; background: var(--deep-rose); top: 40%; right: 25%; animation-delay: -9s; opacity: 0.25; }
.shape-5 { width: 100px; height: 100px; background: var(--soft-pink); top: 80%; left: 40%; animation-delay: -12s; }

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(15px, -15px) scale(1.02); }
    66% { transform: translate(-10px, 10px) scale(0.98); }
}

/* === Layout === */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* === Header === */
.header {
    padding: 40px 0 24px;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    text-align: left;
}

.logo-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 8px;
    animation: gentle-pulse 3s ease-in-out infinite;
}

@keyframes gentle-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.05); }
}

.logo h1 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--soft-text);
    letter-spacing: 0.02em;
}

.tagline {
    font-size: 1rem;
    color: var(--warm-gray);
    margin-top: 4px;
    font-weight: 400;
}

/* === Language Switcher === */
.lang-switcher {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    box-shadow: 0 2px 10px var(--shadow-soft);
    backdrop-filter: blur(6px);
}

.lang-btn {
    border: none;
    background: transparent;
    padding: 6px 10px;
    border-radius: 999px;
    font-family: 'Nunito', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--warm-gray);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}

.lang-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.9);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--rose-quartz), var(--deep-rose));
    color: #ffffff;
}

/* === Hero === */
.hero {
    padding: 20px 0 40px;
}

.hero-text {
    font-size: 1.15rem;
    text-align: center;
    line-height: 1.8;
    color: var(--soft-text);
    padding: 24px 28px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius);
    box-shadow: 0 4px 24px var(--shadow-soft);
    backdrop-filter: blur(8px);
}

/* === Sections === */
section {
    padding: 40px 0;
}

.section-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--soft-text);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.title-icon {
    font-size: 1.5rem;
}

.section-desc {
    color: var(--warm-gray);
    margin-bottom: 24px;
    font-size: 1rem;
}

.hidden {
    display: none !important;
}

/* === Tabs === */
.analyzer-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    border: 2px solid var(--blush);
    background: rgba(255,255,255,0.6);
    border-radius: var(--radius-sm);
    font-family: 'Nunito', sans-serif;
    font-size: 0.95rem;
    color: var(--soft-text);
    cursor: pointer;
    transition: all var(--transition);
}

.tab-btn:hover {
    border-color: var(--rose-quartz);
    background: rgba(255,255,255,0.9);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--rose-quartz), var(--deep-rose));
    border-color: var(--deep-rose);
    color: white;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* === Video input === */
.video-input-area {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.video-options {
    display: flex;
    gap: 20px;
}

.video-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--soft-text);
}

.video-option input {
    accent-color: var(--rose-quartz);
}

.video-source-area video {
    max-width: 100%;
    max-height: 240px;
    border-radius: var(--radius-sm);
    background: var(--blush);
    display: block;
    margin-bottom: 12px;
}

.video-hint {
    font-size: 0.9rem;
    color: var(--warm-gray);
    margin-top: 8px;
}

#videoFile {
    padding: 8px;
    font-family: 'Nunito', sans-serif;
}

/* === Info Cards === */
.info-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius);
    padding: 24px 28px;
    box-shadow: 0 4px 20px var(--shadow-soft);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: transform var(--transition), box-shadow var(--transition);
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--shadow-deep);
}

.info-card.warning {
    border-left: 4px solid var(--deep-rose);
}

.info-card.positive {
    border-left: 4px solid #9caf88;
}

.card-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.info-card h3 {
    font-size: 1.2rem;
    color: var(--soft-text);
    margin-bottom: 12px;
    font-weight: 600;
}

.info-card p, .info-card li {
    font-size: 0.98rem;
    color: var(--warm-gray);
}

.info-card ul {
    list-style: none;
    padding-left: 0;
}

.info-card li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
}

.info-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--rose-quartz);
    font-weight: bold;
}

/* === Emotion Analyzer === */
.emotion-analyzer {
    background: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius);
    padding: 40px 24px;
    margin: 0 16px;
    box-shadow: inset 0 0 60px var(--shadow-soft);
}

.analyzer-box {
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: 0 4px 24px var(--shadow-soft);
}

.input-area textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--blush);
    border-radius: var(--radius-sm);
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    color: var(--soft-text);
    resize: vertical;
    min-height: 100px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.input-area textarea:focus {
    outline: none;
    border-color: var(--rose-quartz);
    box-shadow: 0 0 0 4px var(--shadow-soft);
}

.input-area textarea::placeholder {
    color: var(--warm-gray);
    opacity: 0.8;
}

.btn-primary {
    margin-top: 16px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--rose-quartz), var(--deep-rose));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-deep);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-primary.loading .btn-text {
    visibility: hidden;
}

.btn-primary.loading .btn-loader {
    display: inline-block;
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -10px;
    margin-top: -10px;
}

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

.api-hint {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--warm-gray);
}

.api-hint code {
    background: var(--blush);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* === Result Area === */
.result-area {
    margin-top: 24px;
    padding: 24px;
    background: var(--pearl);
    border-radius: var(--radius-sm);
    border: 1px solid var(--blush);
}

.result-area.hidden {
    display: none;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.result-emoji {
    font-size: 2rem;
}

.result-header h3 {
    font-size: 1.2rem;
    color: var(--soft-text);
}

.result-content, .result-suggestions {
    font-size: 0.98rem;
    color: var(--warm-gray);
    line-height: 1.7;
}

.result-suggestions {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--blush);
}

.result-suggestions strong {
    color: var(--soft-text);
}

/* === Tips === */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.tip-card {
    background: rgba(255, 255, 255, 0.7);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px var(--shadow-soft);
    transition: transform var(--transition);
}

.tip-card:hover {
    transform: translateY(-4px);
}

.tip-card h4 {
    font-size: 1.3rem;
    color: var(--deep-rose);
    margin-bottom: 8px;
}

.tip-card p {
    font-size: 0.95rem;
    color: var(--warm-gray);
}

/* === Footer === */
.footer {
    padding: 40px 0;
    text-align: center;
}

.footer p {
    font-size: 0.95rem;
    color: var(--warm-gray);
}

/* === Responsive === */
@media (max-width: 600px) {
    .logo h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .emotion-analyzer {
        margin: 0 8px;
    }
}