/* ===== Fitness Theme Variables ===== */
:root {
    /* 강렬하고 에너지 넘치는 색상 팔레트 */
    --primary-color: #FF6B9D;
    --primary-dark: #E55584;
    --secondary-color: #5AC8FA;
    --accent-color: #FFCC00;
    --success-color: #34C759;
    --warning-color: #FF9500;

    /* 배경색 */
    --bg-white: #FFFFFF;
    --bg-gray: #F5F5F7;
    --bg-gray-light: #FAFAFA;
    --bg-dark: #1C1C1E;

    /* 텍스트 */
    --text-primary: #000000;
    --text-secondary: #6E6E73;
    --text-tertiary: #8E8E93;

    /* 테두리 & 그림자 */
    --border-color: #E5E5EA;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Border Radius */
    --border-radius: 12px;
    --border-radius-lg: 20px;

    /* Transition */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--bg-gray-light);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: 24px;
    padding: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.logo {
    font-size: 32px;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
    letter-spacing: -1px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    margin-bottom: 20px;
}

.mode-switcher {
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.mode-btn {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.mode-btn.active {
    background: white;
    color: var(--primary-color);
}

.mode-icon {
    font-size: 20px;
}

.mode-text {
    font-size: 12px;
}

/* ===== Navigation ===== */
.nav-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--bg-white);
    padding: 8px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    min-width: 70px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--bg-gray);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.card h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

/* ===== Tab Contents ===== */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ===== Macro Circles ===== */
.macro-circles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.macro-circle-item {
    text-align: center;
}

.macro-circle {
    width: 100px;
    height: 100px;
    margin: 0 auto 12px;
}

.macro-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 100%;
}

.macro-circle-item {
    position: relative;
}

.macro-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.macro-target {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

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

.total-calories {
    text-align: center;
    padding: 20px;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
}

.calories-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 600;
}

.calories-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ===== Body Stats ===== */
.body-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.stat-item {
    background: var(--bg-gray);
    padding: 20px 16px;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 600;
}

.stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-change {
    font-size: 13px;
    font-weight: 600;
}

.stat-change.positive {
    color: var(--success-color);
}

.stat-change.negative {
    color: var(--primary-color);
}

/* ===== Workout Meals ===== */
.workout-meals {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.meal-recommendation {
    padding: 20px;
    border-radius: var(--border-radius);
    border: 2px solid;
}

.meal-recommendation.pre-workout {
    border-color: var(--secondary-color);
    background: linear-gradient(135deg, rgba(90, 200, 250, 0.05), rgba(90, 200, 250, 0.1));
}

.meal-recommendation.post-workout {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.05), rgba(255, 107, 157, 0.1));
}

.meal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.meal-icon {
    font-size: 20px;
}

.meal-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
}

.suggestion-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.suggestion-examples {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.example-item {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 6px 10px;
    background: white;
    border-radius: 6px;
}

.suggestion-macros {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    padding: 8px;
    background: white;
    border-radius: 6px;
}

/* ===== Meals List ===== */
.meals-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.empty-message {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

/* ===== Analysis ===== */
.analyze-description {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

.warning-box {
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.1), rgba(255, 149, 0, 0.2));
    border: 2px solid var(--warning-color);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
    color: var(--warning-color);
}

.camera-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-camera, .btn-gallery {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.btn-camera:hover, .btn-gallery:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-gray);
    color: var(--text-primary);
}

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

.btn-danger {
    background: var(--primary-color);
    color: white;
}

.image-preview {
    text-align: center;
    margin-bottom: 20px;
}

.image-preview img {
    max-width: 100%;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
}

.result-section {
    margin-top: 24px;
}

.result-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.food-info {
    text-align: center;
    margin-bottom: 20px;
}

.food-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
}

.food-macros {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.macro-badge {
    padding: 16px 12px;
    border-radius: var(--border-radius);
    text-align: center;
}

.macro-badge.protein {
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(255, 107, 157, 0.2));
    border: 2px solid var(--primary-color);
}

.macro-badge.carbs {
    background: linear-gradient(135deg, rgba(90, 200, 250, 0.1), rgba(90, 200, 250, 0.2));
    border: 2px solid var(--secondary-color);
}

.macro-badge.fat {
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.1), rgba(255, 204, 0, 0.2));
    border: 2px solid var(--accent-color);
}

.badge-label {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 600;
}

.badge-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.food-calories {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.fitness-evaluation {
    padding: 20px;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.evaluation-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.evaluation-icon {
    font-size: 24px;
}

.evaluation-title {
    font-size: 16px;
    font-weight: 700;
}

.evaluation-content {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.evaluation-rating {
    margin-top: 12px;
}

.rating-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: block;
}

.rating-bar {
    height: 10px;
    background: white;
    border-radius: 10px;
    overflow: hidden;
}

.rating-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 0.5s ease;
}

.result-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

/* ===== Protein Tab ===== */
.protein-goal {
    text-align: center;
    padding: 24px;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(255, 107, 157, 0.2));
    border-radius: var(--border-radius);
    margin-bottom: 24px;
}

.goal-formula {
    margin-bottom: 8px;
}

.formula-text {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 600;
}

.formula-result {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.goal-description {
    font-size: 13px;
    color: var(--text-secondary);
}

.protein-progress {
    margin-bottom: 32px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-bar-large {
    height: 16px;
    background: var(--bg-gray);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill-large {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 0.5s ease;
}

.section-subtitle {
    font-size: 16px;
    font-weight: 700;
    margin: 24px 0 16px;
}

.food-suggestions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.food-suggestion-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
}

.food-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.food-details {
    flex: 1;
}

.food-name-small {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.food-protein {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-color);
}

/* ===== Carb Cycling ===== */
.carb-cycling {
    margin-bottom: 32px;
}

.cycle-days {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.cycle-day {
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px solid;
}

.cycle-day.high {
    border-color: var(--success-color);
    background: linear-gradient(135deg, rgba(52, 199, 89, 0.05), rgba(52, 199, 89, 0.1));
}

.cycle-day.medium {
    border-color: var(--warning-color);
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.05), rgba(255, 149, 0, 0.1));
}

.cycle-day.low {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.05), rgba(255, 107, 157, 0.1));
}

.day-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.day-carbs {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.day-description {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== Supplements ===== */
.supplements-description {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.supplements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.supplement-card {
    padding: 20px;
    border-radius: var(--border-radius);
    border: 2px solid;
    position: relative;
}

.supplement-card.essential {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.05), rgba(255, 107, 157, 0.1));
}

.supplement-card.recommended {
    border-color: var(--secondary-color);
    background: linear-gradient(135deg, rgba(90, 200, 250, 0.05), rgba(90, 200, 250, 0.1));
}

.supplement-card.optional {
    border-color: var(--border-color);
    background: var(--bg-gray);
}

.supplement-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    background: white;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
}

.supplement-icon {
    font-size: 40px;
    text-align: center;
    margin-bottom: 12px;
}

.supplement-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
}

.supplement-timing,
.supplement-dose,
.supplement-benefit {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 4px;
}

.supplement-benefit {
    font-weight: 600;
    margin-top: 8px;
}

/* ===== Settings ===== */
.setting-section {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 2px solid var(--bg-gray);
}

.setting-section:last-child {
    border-bottom: none;
}

.setting-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.setting-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.setting-description a {
    color: var(--primary-color);
    text-decoration: underline;
}

.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.input-field {
    flex: 1;
    padding: 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
}

.api-key-status {
    text-align: center;
    font-size: 13px;
}

.input-rows {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 20px;
}

.input-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-row label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.data-actions {
    display: flex;
    gap: 12px;
}

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

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
}

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

/* ===== Loading ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-gray);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading p {
    margin-top: 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .container {
        padding: 16px;
    }

    .macro-circles {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .body-stats-grid {
        grid-template-columns: 1fr;
    }

    .workout-meals {
        grid-template-columns: 1fr;
    }

    .food-suggestions {
        grid-template-columns: 1fr;
    }

    .cycle-days {
        grid-template-columns: 1fr;
    }

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

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

    .mode-switcher {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 28px;
    }

    .food-macros {
        grid-template-columns: 1fr;
    }
}