:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --light-bg: #f8fafc;
    --dark-text: #1e293b;
    --gray-text: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}


body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.bg-light {
    background: transparent !important;
}


.page-title {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.page-title h1 {
    color: black;
    font-weight: 700;
    font-size: 2.5rem;
    margin: 0;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-title .subtitle {
    color: rgba(0, 0, 0, 0.8);
    text-align: center;
    margin-top: 0.5rem;
    font-size: 1.1rem;
}


.card {
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card-header {
    background: var(--gradient-primary);
    border: none;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.card-header.bg-success {
    background: var(--gradient-success);
}

.card-header h4 {
    color: white;
    font-weight: 600;
    margin: 0;
    position: relative;
    z-index: 1;
}

.card-header i {
    margin-right: 0.75rem;
    font-size: 1.2em;
}

.card-body {
    padding: 2rem;
}


.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.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;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-success);
    border-color: transparent;
    color: white;
}


.form-control {
    border-radius: 12px;
    border: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

.form-label {
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
}


.form-check {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: 12px;
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.1);
    transition: all 0.3s ease;
}

.form-check:hover {
    background: rgba(37, 99, 235, 0.1);
    transform: translateX(5px);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    border-radius: 6px;
    border: 2px solid var(--primary-color);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-label {
    font-weight: 500;
    color: var(--dark-text);
    margin-left: 0.75rem;
}


.detection-results-container {
    max-height: 70vh;
    overflow-y: auto;
    padding-right: 0.5rem;
}


.detection-results-container::-webkit-scrollbar {
    width: 10px;
}

.detection-results-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

.detection-results-container::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.detection-results-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}


.alert {
    border-radius: 16px;
    border: none;
    padding: 1rem 1.5rem;
    font-weight: 500;
    box-shadow: var(--shadow-md);
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
    color: #7f1d1d;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    color: #78350f;
    border-left: 4px solid var(--warning-color);
}


.spinner-border {
    width: 1rem;
    height: 1rem;
}


#resultsPlaceholder {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    color: rgba(0, 0, 0, 0.5);
    border: 2px dashed rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

#resultsPlaceholder:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(0, 0, 0, 0.2);
}


.file-drop-zone {
    border: 3px dashed rgba(37, 99, 235, 0.3);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    background: rgba(37, 99, 235, 0.05);
    transition: all 0.3s ease;
    cursor: pointer;
}

.file-drop-zone:hover {
    border-color: rgba(37, 99, 235, 0.6);
    background: rgba(37, 99, 235, 0.1);
    transform: scale(1.02);
}

.file-drop-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.15);
    transform: scale(1.05);
}


.bi {
    display: inline-block;
    fill: currentColor;
}


@media (max-width: 768px) {
    .detection-results-container {
        max-height: 50vh;
    }

    .card-header h4 {
        font-size: 1.1rem;
    }
    
    .page-title h1 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .card-header {
        padding: 1rem;
    }
}


.session-item {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 1rem;
    border-radius: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.time {
    color: var(--gray-text);
    font-size: 0.9em;
    font-weight: 500;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}


@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

body {
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}




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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -15px, 0);
    }
    70% {
        transform: translate3d(0, -7px, 0);
    }
    90% {
        transform: translate3d(0, -3px, 0);
    }
}

@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 slideInDown {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out forwards;
}

.animate-bounce {
    animation: bounce 2s infinite;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-slide-in-down {
    animation: slideInDown 0.8s ease-out forwards;
}

.animate-slide-in-up {
    animation: slideInUp 0.8s ease-out forwards;
}


.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }


.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}


.text-glow {
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.text-rainbow {
    background: linear-gradient(45deg, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #9400d3);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: rainbowText 3s ease-in-out infinite;
}

@keyframes rainbowText {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}


.loading-dots {
    display: inline-block;
}

.loading-dots:after {
    content: '...';
    animation: loadingDots 1.5s infinite;
}

@keyframes loadingDots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}


.success-check {
    animation: successPop 0.6s ease-out forwards;
}

.error-shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes successPop {
    0% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}


.particles-bg {
    position: relative;
    overflow: hidden;
}

.particles-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px, 30px 30px, 20px 20px;
    animation: particlesFloat 20s linear infinite;
    pointer-events: none;
}

@keyframes particlesFloat {
    0% { transform: translateY(0px) translateX(0px); }
    33% { transform: translateY(-10px) translateX(5px); }
    66% { transform: translateY(5px) translateX(-5px); }
    100% { transform: translateY(0px) translateX(0px); }
}


.progress-animated {
    position: relative;
    overflow: hidden;
}

.progress-animated::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: progressShine 2s infinite;
}

@keyframes progressShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}


@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}