* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    transition: background-color 0.2s ease, color 0.2s ease;
}

:root {
    --bg-body: #f5f7fa;
    --bg-container: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #4a627a;
    --border: #dce4ec;
    --button-bg: #2c3e50;
    --button-hover: #1e2b38;
    --button-secondary: #e2e6ea;
    --button-secondary-hover: #cbd3da;
    --card-bg: #ffffff;
    --shadow: none;
    --accent: #3498db;
}

body.dark {
    --bg-body: #121212;
    --bg-container: #1e1e2f;
    --text-primary: #eef2f7;
    --text-secondary: #b0bec5;
    --border: #2c3e50;
    --button-bg: #3b4b5e;
    --button-hover: #4a627a;
    --button-secondary: #2c3e50;
    --button-secondary-hover: #405b73;
    --card-bg: #2a2a3b;
    --accent: #5dade2;
}

body {
    background: var(--bg-body);
    margin: 0;
    padding: 0;
    color: var(--text-primary);
}

.app {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-container);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 12px 12px 20px;
}

/* Шапка */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0 4px;
}
h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 600;
}
.theme-btn {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 40px;
    color: var(--text-primary);
}

/* Табы */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.tab-btn {
    flex: 1;
    padding: 10px;
    background: var(--button-secondary);
    border: none;
    border-radius: 40px;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 500;
}
.tab-btn.active {
    background: var(--button-bg);
    color: white;
}
.panel {
    display: none;
    flex: 1;
}
.panel.active {
    display: block;
}

/* Карточки (без теней и рамок) */
.card-stack {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 16px;
}
.tinder-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1), opacity 0.2s;
    box-shadow: none;
    border: none;
}
.card-inner {
    display: flex;
    flex-direction: column;
}
.card-image-wrapper {
    background: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    width: 100%;
}
.card-image {
    width: 100%;
    height: auto;
    max-height: calc(100vh - 220px);
    object-fit: contain;
    transition: transform 0.2s;
}
/* Зум (без полос) */
.card-image-wrapper.zoomed .card-image {
    transform: scale(3);
    cursor: zoom-out;
}
.card-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    margin: auto;
}
.file-name {
    font-weight: 500;
    word-break: break-all;
    cursor: pointer;
    flex: 1;
}
.file-size {
    opacity: 0.6;
    font-size: 0.8rem;
}
.card-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 8px 16px 16px;
}
.card-actions button {
    background: var(--button-secondary);
    border: none;
    padding: 8px 16px;
    border-radius: 40px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
}
.rotate-group {
    display: flex;
    gap: 8px;
}

/* Навигационные кнопки */
.nav-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 8px;
    margin-bottom: 16px;
}
.nav-btn {
    background: var(--button-secondary);
    border: none;
    padding: 10px 18px;
    border-radius: 40px;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-primary);
}
.nav-btn:hover {
    background: var(--button-secondary-hover);
}

/* Загрузка */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}
input, button {
    padding: 12px;
    border-radius: 40px;
    border: 1px solid var(--border);
    font-size: 1rem;
    background: var(--bg-container);
    color: var(--text-primary);
}
button {
    background: var(--button-bg);
    color: white;
    border: none;
    cursor: pointer;
}
.button-group {
    display: flex;
    gap: 10px;
}
#status {
    margin-top: 16px;
    padding: 12px;
    border-radius: 20px;
    background: var(--card-bg);
    text-align: center;
    font-size: 0.85rem;
}
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(3px);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 1000;
    color: white;
}
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}
.rename-input {
    padding: 6px 12px;
    margin: 0 8px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-container);
    color: var(--text-primary);
        font-size: 1.2rem;

}
/* Стили для элементов загрузки */
.upload-label {
    font-weight: 500;
    margin-top: 8px;
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
#fileInput, #cameraInput {
    padding: 10px;
    border-radius: 40px;
    border: 1px solid var(--border);
    background: var(--bg-container);
    color: var(--text-primary);
}
.button-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}