:root {
    --primary-color: #7c3aed;
    --primary-dark: #6d28d9;
    --secondary-color: #ede9fe;
    --text-color: #1e293b;
    --light-text: #64748b;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --card-bg: #ffffff;
    --body-bg: #f8fafc;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --scan-pulse: 0 0 0 0 rgba(124, 58, 237, 0.7);
    --glass-effect: rgba(255, 255, 255, 0.25);
    --glass-border: 1px solid rgba(255, 255, 255, 0.18);
    --gradient-start: #7c3aed;
    --gradient-end: #4f46e5;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    background-size: cover;
    background-attachment: fixed;
}
@keyframes scanPulse {
    0% {
        box-shadow: var(--scan-pulse);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(124, 58, 237, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(124, 58, 237, 0);
    }
}
.mobile-frame {
    width: 100%;
    max-width: 375px;
    height: 667px;
    background: white;
    border-radius: 24px;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
}
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}
.app-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.app-header {
    padding: 24px 20px;
    text-align: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 50%);
    z-index: 1;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    z-index: 2;
}

.logo-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    backdrop-filter: blur(8px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
}

.logo-text h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.header-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-top: 4px;
}
.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

.scan-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.camera-view {
    position: relative;
    width: 100%;
    height: 320px;
    background: white;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    margin-bottom: 0;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(79, 70, 229, 0.05));
}
.camera-view.active-scan {
    border: 2px solid var(--primary-color);
}
.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(79, 70, 229, 0.1));
}
.placeholder-image::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(79, 70, 229, 0.1));
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.camera-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(79, 70, 229, 0.2));
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.camera-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    color: white;
    margin-bottom: 12px;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 20px;
    width: 100%;
    max-width: 280px;
}
.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: white;
    text-align: center;
}
.feature-item i {
    font-size: 18px;
    background: rgba(255, 255, 255, 0.25);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.camera-overlay p {
    font-weight: 600;
    font-size: 1.2rem;
    color: white;
    text-align: center;
}
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--light-text);
    gap: 12px;
}
.empty-state i {
    font-size: 32px;
    color: var(--border-color);
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}
.scan-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}
.scan-button {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    box-shadow: 
        0 8px 16px rgba(124, 58, 237, 0.3);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    position: relative;
    overflow: hidden;
    border: 3px solid white;
    position: relative;
}
.scan-button::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg,
        transparent,
        rgba(255, 255, 255, 0.4) 20%,
        transparent 80%
    );
    animation: rotate 3s linear infinite;
    z-index: 1;
}

.scan-button i {
    position: relative;
    z-index: 2;
}
.scan-button::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.3) 0%,
        rgba(255, 255, 255, 0) 60%
    );
    transform: rotate(30deg);
    transition: all 0.6s ease;
}

.scan-button:hover::before {
    transform: translateX(100%) rotate(30deg);
}

.scan-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 
        0 10px 15px -3px rgba(0, 0, 0, 0.1),
        0 4px 6px -4px rgba(0, 0, 0, 0.1);
}
.upload-button {
    background: var(--success-color);
    box-shadow: 
        0 4px 6px -1px rgba(16, 185, 129, 0.3),
        0 2px 4px -2px rgba(16, 185, 129, 0.3);
}

.upload-button:hover {
    background: #059669;
    box-shadow: 
        0 6px 8px -1px rgba(16, 185, 129, 0.4),
        0 4px 6px -2px rgba(16, 185, 129, 0.4);
}
.capture-button {
    background: var(--primary-color);
}
.results-preview {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
    border-radius: 24px;
    padding: 20px;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
.results-preview h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
    display: inline-block;
}
.text-preview {
    padding: 16px;
    background: linear-gradient(135deg, #f8fafc, #ffffff);
    border-radius: 16px;
    min-height: 140px;
    border: 1px solid rgba(124, 58, 237, 0.15);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.image-preview-container {
    margin-top: 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
    border-radius: 24px;
    padding: 20px;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
.image-preview-container h4 {
    margin-bottom: 12px;
    color: var(--primary-color);
    font-size: 1rem;
}

.image-preview {
    position: relative;
    width: 100%;
    height: 200px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.close-preview {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.close-preview:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}
.processed-text-section {
    margin-top: 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
    border-radius: 24px;
    padding: 20px;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
.processed-text-section h4 {
    margin-bottom: 12px;
    color: var(--primary-color);
    font-size: 1rem;
}

.processed-text-content {
    padding: 16px;
    background: linear-gradient(135deg, #f8fafc, #ffffff);
    border-radius: 16px;
    min-height: 100px;
    border: 1px solid rgba(124, 58, 237, 0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
    white-space: pre-wrap;
    line-height: 1.6;
}
.ocr-text {
    position: relative;
    z-index: 1;
    background: white;
    padding: 8px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin: 4px 0;
    line-height: 1.6;
}

.timestamp {
    font-size: 0.8rem;
    color: var(--light-text);
    text-align: right;
    margin-top: 8px;
    position: relative;
    z-index: 1;
}
.history-list h3 {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.history-empty {
    text-align: center;
    padding: 50px 0;
    color: var(--light-text);
}

.settings-options h3 {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}
.bottom-tabs {
    display: flex;
    justify-content: space-around;
    padding: 16px 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}
.tab-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--light-text);
    font-size: 12px;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-weight: 500;
}
.tab-button::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
    border-radius: 3px 3px 0 0;
}

.tab-button i {
    font-size: 22px;
    transition: all 0.3s ease;
}

.tab-button.active {
    color: var(--primary-color);
    background: rgba(124, 58, 237, 0.05);
}

.tab-button.active::before {
    width: 80%;
}

.tab-button.active i {
    transform: translateY(-4px);
    filter: drop-shadow(0 4px 8px rgba(124, 58, 237, 0.3);
}
.tab-button:hover:not(.active) {
    color: var(--primary-color);
    background: rgba(124, 58, 237, 0.05);
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
select {
    padding: 5px 10px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    background: white;
}