/* === PromoMaster - Product Promotion Tool === */

:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #A29BFE;
    --accent: #00CEC9;
    --accent-dark: #00B5B0;
    --bg: #0F0F1A;
    --bg-card: #1A1A2E;
    --bg-card-hover: #222240;
    --text: #EAEAEA;
    --text-muted: #8B8BA3;
    --border: #2D2D4A;
    --success: #00E676;
    --warning: #FFD93D;
    --danger: #FF6B6B;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
    --glow: 0 0 30px rgba(108, 92, 231, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === Language Toggle === */
.lang-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 4px;
    box-shadow: var(--shadow);
}

.lang-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 26px;
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: var(--primary);
    color: #fff;
}

.lang-btn:hover:not(.active) {
    color: var(--text);
    background: var(--border);
}

/* === Hero === */
.hero {
    position: relative;
    padding: 80px 0 50px;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 50% 50%, rgba(108, 92, 231, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 206, 201, 0.1) 0%, transparent 40%);
    animation: heroPulse 8s ease-in-out infinite;
}

@keyframes heroPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    letter-spacing: -2px;
    position: relative;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-icon {
    font-size: 0.8em;
    -webkit-text-fill-color: initial;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--text-muted);
    margin-top: 12px;
    position: relative;
    font-weight: 300;
}

/* === Cards === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: border-color 0.3s ease;
}

.card:hover {
    border-color: var(--primary);
}

/* === Step Header === */
.step-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

.step-number {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    font-weight: 800;
    font-size: 20px;
    color: #fff;
    flex-shrink: 0;
}

.step-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
}

/* === Form === */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 14px 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 15px;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238B8BA3' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.char-count {
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
}

/* === Style Options === */
.style-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.style-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 14px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.style-option:hover {
    border-color: var(--primary-light);
    background: var(--bg-card-hover);
}

.style-option.selected {
    border-color: var(--primary);
    background: rgba(108, 92, 231, 0.1);
    box-shadow: var(--glow);
}

.style-icon {
    font-size: 32px;
}

.style-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.style-option.selected .style-label {
    color: var(--text);
}

/* === Generate Button === */
.generate-section {
    text-align: center;
    margin: 40px 0;
}

.btn-generate {
    padding: 18px 48px;
    font-size: 18px;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-generate:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(108, 92, 231, 0.5);
}

.btn-generate:active {
    transform: translateY(0);
}

.btn-generate.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-generate.loading .btn-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.btn-icon {
    font-size: 22px;
    display: inline-block;
}

/* === Results === */
.results-section {
    animation: fadeInUp 0.6s ease;
}

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

.result-card {
    position: relative;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.result-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.btn-copy-all {
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--primary-light);
    background: rgba(108, 92, 231, 0.1);
    border: 1px solid var(--primary);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-copy-all:hover {
    background: var(--primary);
    color: #fff;
}

/* === Tabs === */
.result-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.tab-btn {
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text);
    border-color: var(--primary-light);
}

.tab-btn.active {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

.tab-content {
    transition: all 0.3s ease;
}

/* === Language Results === */
.lang-results {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lang-result {
    position: relative;
    padding: 20px;
    padding-left: 56px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.lang-badge {
    position: absolute;
    top: 20px;
    left: 16px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #E74C3C, #C0392B);
    border-radius: 6px;
    letter-spacing: 1px;
}

.lang-badge.en {
    background: linear-gradient(135deg, #2980B9, #2471A3);
}

.result-text {
    font-size: 14px;
    line-height: 1.8;
    white-space: pre-wrap;
    color: var(--text);
    padding-right: 40px;
}

.btn-copy {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    color: var(--text);
}

.btn-copy:hover {
    background: var(--primary);
    border-color: var(--primary);
}

/* === Slogans === */
.slogan-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.slogan-item {
    padding: 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.slogan-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.slogan-item .slogan-lang {
    font-size: 10px;
    font-weight: 800;
    color: var(--text-muted);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 6px;
}

/* === Hashtags === */
.hashtag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hashtag {
    padding: 8px 16px;
    background: rgba(108, 92, 231, 0.1);
    border: 1px solid var(--primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hashtag:hover {
    background: var(--primary);
    color: #fff;
}

/* === Landing Page Preview === */
.landing-preview-container {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.preview-toggle {
    display: flex;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.preview-btn {
    flex: 1;
    padding: 12px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preview-btn.active {
    color: var(--text);
    background: var(--bg-card);
    border-bottom: 2px solid var(--primary);
}

.landing-preview {
    min-height: 300px;
    background: #fff;
}

.landing-preview iframe {
    width: 100%;
    height: 500px;
    border: none;
}

.landing-code {
    padding: 20px;
    background: var(--bg);
    color: var(--accent);
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    max-height: 400px;
    white-space: pre;
    margin: 0;
    cursor: pointer;
}

/* === Export === */
.export-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.btn-export {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-export:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.export-icon {
    font-size: 28px;
}

/* === Toast === */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 14px 28px;
    background: var(--success);
    color: #000;
    font-weight: 600;
    font-size: 14px;
    border-radius: 30px;
    z-index: 1000;
    opacity: 0;
    transition: all 0.4s ease;
    box-shadow: 0 8px 30px rgba(0, 230, 118, 0.3);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
    border-top: 1px solid var(--border);
    margin-top: 60px;
}

/* === Hidden === */
.hidden {
    display: none !important;
}

/* === Responsive === */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .style-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .slogan-grid {
        grid-template-columns: 1fr;
    }

    .export-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card {
        padding: 24px 18px;
    }

    .hero {
        padding: 60px 0 30px;
    }

    .lang-toggle {
        top: 12px;
        right: 12px;
    }

    .result-tabs {
        gap: 4px;
    }

    .tab-btn {
        padding: 8px 14px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .style-grid {
        grid-template-columns: 1fr;
    }

    .export-grid {
        grid-template-columns: 1fr 1fr;
    }

    .btn-generate {
        padding: 16px 32px;
        font-size: 16px;
    }
}