/* STORYCUT v2.0 - 다크 테마 UI */

:root {
    /* 색상 팔레트 */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-hover: #0a3d62;

    --text-primary: #ffffff;
    --text-secondary: #a8b2d1;
    --text-muted: #8892b0;

    --accent-primary: #00d4ff;
    --accent-secondary: #ff6b6b;
    --accent-success: #4ecca3;
    --accent-warning: #ffd93d;

    --border-color: #2d3748;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);

    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* 애니메이션 */
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ============================================================================
   헤더
============================================================================ */

.header {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border-color);
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.version {
    font-size: 1rem;
    opacity: 0.7;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

/* ============================================================================
   섹션
============================================================================ */

.section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.section h2 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
}

.hidden {
    display: none !important;
}

/* ============================================================================
   폼
============================================================================ */

.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.label-icon {
    font-size: 1.2rem;
}

.section-label {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.helper-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 입력 필드 */
.input,
.select {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.input:focus,
.select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

/* 슬라이더 */
.slider {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    transition: var(--transition);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 라디오 버튼 */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-label {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.radio-label:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    position: relative;
    transition: var(--transition);
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--accent-primary);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-primary);
}

/* 체크박스 */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.checkbox-label:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    min-width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: var(--spacing-sm);
    position: relative;
    transition: var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-primary);
    font-weight: bold;
}

.checkbox-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.checkbox-text small {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 버튼 */
.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #0099cc);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-icon {
    font-size: 1.2rem;
}

/* ============================================================================
   진행상황
============================================================================ */

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

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

.progress-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-percentage {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.progress-bar-wrapper {
    width: 100%;
    height: 20px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
    border-radius: 10px;
    transition: width 0.5s ease;
    width: 0%;
}

.status-message {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    border-radius: 4px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 단계 */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.step {
    display: flex;
    gap: var(--spacing-sm);
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.step.active {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.step.completed {
    border-color: var(--accent-success);
}

.step-icon {
    font-size: 2rem;
}

.step-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.step-title {
    font-weight: 600;
    color: var(--text-primary);
}

.step-status {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 로그 */
.log-container {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.log-content {
    padding: 1rem;
    max-height: 300px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.log-entry {
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
}

.log-timestamp {
    color: var(--text-muted);
    margin-right: 0.5rem;
}

/* ============================================================================
   결과
============================================================================ */

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

.result-info {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-success);
}

.result-info code {
    background: var(--bg-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: var(--accent-primary);
    font-family: 'Courier New', monospace;
}

.video-player {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-primary);
}

.video-player video {
    width: 100%;
    display: block;
}

.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* 최적화 패키지 */
.optimization-pack {
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 2px solid var(--accent-success);
}

.optimization-pack h3 {
    color: var(--accent-success);
    margin-bottom: var(--spacing-md);
}

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

.opt-section h4 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.candidate-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.candidate-item {
    padding: 0.75rem;
    background: var(--bg-primary);
    border-radius: 4px;
    border-left: 3px solid var(--accent-primary);
    cursor: pointer;
    transition: var(--transition);
}

.candidate-item:hover {
    background: var(--bg-hover);
    transform: translateX(5px);
}

.hashtag-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.hashtag {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border-radius: 20px;
    color: var(--accent-primary);
    font-weight: 600;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.hashtag:hover {
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

/* ============================================================================
   푸터
============================================================================ */

.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    border-top: 2px solid var(--border-color);
    color: var(--text-muted);
}

.footer a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    text-decoration: underline;
}

/* ============================================================================
   반응형
============================================================================ */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }

    .logo h1 {
        font-size: 2rem;
    }

    .steps-container {
        grid-template-columns: 1fr;
    }

    .result-actions {
        flex-direction: column;
    }
}

/* ============================================================================
   애니메이션
============================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeIn 0.5s ease;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.step.active .step-icon {
    animation: pulse 2s infinite;
}