:root {
    --primary-blue: #0d6efd;
    --dark-bg: #121212;
    --text-light: #ffffff;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
    --border-color: #dee2e6;
    --error-color: #dc3545;
    --success-color: #28a745;
    --font-family-main: 'Inter', 'Helvetica', 'Arial', sans-serif;
    --animation-duration: 0.3s;
    --animation-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-family-main);
    overflow-x: hidden;
}

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

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(13, 110, 253, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(13, 110, 253, 0.6);
    }
}

.hidden {
    display: none !important;
}

.hero-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--dark-bg);
    transition: background-image 0.8s ease-in-out;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.hero-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(13, 110, 253, 0.1), rgba(13, 110, 253, 0.3));
    animation: float 6s ease-in-out infinite;
}

.hero-content {
    text-align: center;
    color: var(--text-light);
    padding: 40px 60px;
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
    animation: fadeIn 1s ease-out;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ffffff, #0d6efd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInFromLeft 0.8s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 40px;
    max-width: 500px;
    animation: slideInFromRight 0.8s ease-out 0.4s both;
    opacity: 0.9;
}

.hero-button {
    background: linear-gradient(45deg, var(--primary-blue), #0056b3);
    color: var(--text-light);
    border: none;
    padding: 16px 32px;
    font-size: 20px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--animation-duration) var(--animation-easing);
    position: relative;
    overflow: hidden;
    animation: bounceIn 1s ease-out 0.6s both;
    box-shadow: 0 10px 30px rgba(13, 110, 253, 0.3);
}

.hero-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.hero-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(13, 110, 253, 0.4);
    animation: pulse 2s infinite;
}

.hero-button:hover::before {
    left: 100%;
}

.hero-button:active {
    transform: translateY(-1px);
}

.app-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    padding: 40px;
    animation: fadeIn 0.8s ease-out;
    position: relative;
    overflow: hidden;
}

.app-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), #0056b3, var(--primary-blue));
    background-size: 200% 100%;
    animation: glow 3s ease-in-out infinite;
}

.app-header {
    display: flex;
    justify-content: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #dee2e6;
    margin-bottom: 30px;
    animation: slideInFromLeft 0.6s ease-out 0.2s both;
}

.app-title {
    font-size: 36px;
    color: var(--text-dark);
    margin-bottom: 8px;
    background: linear-gradient(45deg, var(--text-dark), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: scaleIn 0.6s ease-out 0.4s both;
}

.app-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    animation: fadeIn 0.6s ease-out 0.6s both;
}

.app-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
    animation: slideInFromRight 0.6s ease-out 0.8s both;
}

.app-nav__button {
    background: none;
    border: none;
    cursor: pointer;
    color: #6c757d;
    border-bottom: 3px solid transparent;
    transition: all var(--animation-duration) var(--animation-easing);
    padding: 16px 24px;
    font-size: 18px;
    font-weight: 500;
    position: relative;
    border-radius: 8px 8px 0 0;
}

.app-nav__button::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), #0056b3);
    transition: all var(--animation-duration) var(--animation-easing);
    transform: translateX(-50%);
}

.app-nav__button:hover {
    color: var(--primary-blue);
    background-color: rgba(13, 110, 253, 0.05);
    transform: translateY(-2px);
}

.app-nav__button.active {
    color: var(--primary-blue);
    background-color: rgba(13, 110, 253, 0.1);
    transform: translateY(-2px);
}

.app-nav__button.active::before {
    width: 100%;
}


/* --- Main App (дополнения) --- */
.main-app {
    padding: 40px 20px;
}

.app-header {
    margin-bottom: 24px;
}

.app-title {
    font-size: 32px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.app-subtitle {
    font-size: 16px;
    color: var(--text-muted);
}

.app-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}


/* --- Upload View (новые стили) --- */
.upload-drop-zone {
    border: 3px dashed var(--primary-blue);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    background: linear-gradient(135deg, #f0f6ff, #e6f2ff);
    transition: all var(--animation-duration) var(--animation-easing);
    position: relative;
    overflow: hidden;
    animation: scaleIn 0.8s ease-out 1s both;
}

.upload-drop-zone::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(13, 110, 253, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s;
    opacity: 0;
}

.upload-drop-zone:hover {
    background: linear-gradient(135deg, #e6f2ff, #d1e7ff);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(13, 110, 253, 0.2);
    border-color: #0056b3;
}

.upload-drop-zone:hover::before {
    animation: float 2s ease-in-out infinite;
    opacity: 1;
}

.upload-drop-zone.dragover {
    background: linear-gradient(135deg, #d1e7ff, #b3d9ff);
    transform: scale(1.02);
    border-color: #0056b3;
    animation: pulse 1s infinite;
}

.upload-icon {
    font-size: 64px;
    color: var(--primary-blue);
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
    transition: all var(--animation-duration) var(--animation-easing);
}

.upload-drop-zone:hover .upload-icon {
    transform: scale(1.1);
    animation: bounceIn 0.6s ease-out;
}

.upload-drop-zone p {
    color: var(--text-dark);
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 500;
    animation: fadeIn 0.6s ease-out 1.2s both;
}

.upload-hint {
    color: var(--text-muted) !important;
    font-size: 16px !important;
    animation: fadeIn 0.6s ease-out 1.4s both;
}

.upload-error {
    color: var(--error-color) !important;
    font-weight: bold;
    margin-top: 15px;
    padding: 10px 20px;
    background-color: rgba(220, 53, 69, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(220, 53, 69, 0.2);
    animation: shake 0.5s ease-in-out;
}

.browse-btn {
    width: 100%;
    background: linear-gradient(45deg, var(--primary-blue), #0056b3);
    color: var(--text-light);
    border: none;
    padding: 18px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 15px;
    cursor: pointer;
    margin-top: 30px;
    transition: all var(--animation-duration) var(--animation-easing);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.8s ease-out 1.6s both;
    box-shadow: 0 8px 25px rgba(13, 110, 253, 0.3);
}

.browse-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.browse-btn:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(13, 110, 253, 0.4);
}

.browse-btn:hover::before {
    left: 100%;
}

.browse-btn:active {
    transform: translateY(-1px);
}

.current-upload {
    margin-top: 40px;
    animation: fadeIn 0.8s ease-out 1.8s both;
}

.current-upload h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
    font-weight: 600;
}

.url-container {
    display: flex;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all var(--animation-duration) var(--animation-easing);
}

.url-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

#url-input {
    flex-grow: 1;
    padding: 15px 20px;
    border: none;
    font-size: 16px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    color: var(--text-dark);
    transition: all var(--animation-duration) var(--animation-easing);
}

#url-input:focus {
    outline: none;
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    box-shadow: inset 0 0 0 2px var(--primary-blue);
}

#copy-btn {
    background: linear-gradient(45deg, var(--primary-blue), #0056b3);
    color: white;
    border: none;
    padding: 15px 25px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    transition: all var(--animation-duration) var(--animation-easing);
    position: relative;
    overflow: hidden;
}

#copy-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

#copy-btn:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
    transform: scale(1.05);
}

#copy-btn:hover::before {
    left: 100%;
}

#copy-btn:active {
    transform: scale(0.95);
}


/* --- Images View (новые стили) --- */
.image-list {
    list-style: none;
    animation: fadeIn 0.8s ease-out;
}

.image-item {
    display: grid;
    grid-template-columns: 2fr 3fr 1fr;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    border-radius: 15px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    transition: all var(--animation-duration) var(--animation-easing);
    animation: slideInFromLeft 0.6s ease-out both;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.image-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-blue), #0056b3);
    transform: scaleY(0);
    transition: transform var(--animation-duration) var(--animation-easing);
}

.image-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #ffffff, #f0f6ff);
}

.image-item:hover::before {
    transform: scaleY(1);
}

.image-item:last-child {
    border-bottom: none;
}

.image-item__name {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

.image-item__name i {
    color: var(--primary-blue);
    font-size: 24px;
    animation: float 2s ease-in-out infinite;
    transition: all var(--animation-duration) var(--animation-easing);
}

.image-item:hover .image-item__name i {
    animation: bounceIn 0.6s ease-out;
}

.image-item__url a {
    color: var(--text-muted);
    text-decoration: none;
    word-break: break-all;
    transition: all var(--animation-duration) var(--animation-easing);
    padding: 5px 10px;
    border-radius: 8px;
}

.image-item__url a:hover {
    color: var(--primary-blue);
    background-color: rgba(13, 110, 253, 0.1);
    transform: translateX(5px);
}

.image-item__delete {
    text-align: right;
}

.delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 20px;
    padding: 12px;
    border-radius: 50%;
    transition: all var(--animation-duration) var(--animation-easing);
    position: relative;
    overflow: hidden;
}

.delete-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(220, 53, 69, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all var(--animation-duration) var(--animation-easing);
}

.delete-btn:hover {
    color: var(--error-color);
    transform: scale(1.1);
}

.delete-btn:hover::before {
    width: 100%;
    height: 100%;
}

.delete-btn:active {
    transform: scale(0.9);
}

/* Дополнительные анимации и эффекты */
@keyframes successPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.4);
    }
    70% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

@keyframes loadingSpinner {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

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

/* Анимации для успешных операций */
.success-animation {
    animation: successPulse 0.6s ease-out;
}

/* Анимации загрузки */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid var(--primary-blue);
    border-radius: 50%;
    animation: loadingSpinner 1s linear infinite;
}

/* Анимации для появления элементов списка */
.image-item:nth-child(1) { animation-delay: 0.1s; }
.image-item:nth-child(2) { animation-delay: 0.2s; }
.image-item:nth-child(3) { animation-delay: 0.3s; }
.image-item:nth-child(4) { animation-delay: 0.4s; }
.image-item:nth-child(5) { animation-delay: 0.5s; }
.image-item:nth-child(n+6) { animation-delay: 0.6s; }

/* Анимации для переходов между вкладками */
#upload-view, #images-view {
    animation: slideInFromBottom 0.5s ease-out;
}

/* Улучшенные анимации для hover эффектов */
.upload-drop-zone:hover .upload-icon {
    animation: bounceIn 0.6s ease-out, float 3s ease-in-out infinite 0.6s;
}

/* Анимации для кнопок при нажатии */
.hero-button:active,
.browse-btn:active,
#copy-btn:active {
    animation: scaleIn 0.1s ease-out;
}

/* Анимации для ошибок */
.upload-error.show {
    animation: shake 0.5s ease-in-out;
}

/* Анимации для успешного копирования */
#copy-btn.copied {
    background: linear-gradient(45deg, var(--success-color), #1e7e34);
    animation: successPulse 0.6s ease-out;
}

/* Анимации для пустого состояния */
.image-list:empty::before {
    content: '📷 No images uploaded yet';
    display: block;
    text-align: center;
    color: var(--text-muted);
    font-size: 18px;
    padding: 40px 20px;
    animation: fadeIn 0.8s ease-out;
}

/* Анимации для фона hero страницы */
.hero-page.background-changing {
    animation: fadeIn 0.8s ease-in-out;
}

/* Анимации для мобильных устройств */
@media (max-width: 768px) {
    .hero-content {
        padding: 30px 20px;
        margin: 20px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .app-container {
        margin: 20px;
        padding: 30px 20px;
    }
    
    .upload-drop-zone {
        padding: 40px 20px;
    }
    
    .image-item {
        grid-template-columns: 1fr;
        gap: 15px;
        text-align: center;
    }
    
    .image-item__delete {
        text-align: center;
    }
}

/* Анимации для темной темы (если понадобится) */
@media (prefers-color-scheme: dark) {
    .app-container {
        background: linear-gradient(135deg, #2d3748, #1a202c);
        color: var(--text-light);
    }
    
    .image-item {
        background: linear-gradient(135deg, #2d3748, #1a202c);
        border-color: #4a5568;
    }
    
    .upload-drop-zone {
        background: linear-gradient(135deg, #2d3748, #1a202c);
        border-color: var(--primary-blue);
    }
}