/**
 * FileShare - Main Stylesheet
 */

:root {
    --primary-color: #4e54c8;
    --primary-gradient-start: #4e54c8;
    --primary-gradient-end: #8f94fb;
    --secondary-color: #8f94fb;
    --accent-color: #FF5722;
    --dark-color: #333;
    --light-color: #f4f7f9;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    
    /* Futuristic UI Variables */
    --glow-color: rgba(78, 84, 200, 0.6);
    --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 15px 35px rgba(78, 84, 200, 0.2);
    --button-shadow: 0 4px 15px rgba(78, 84, 200, 0.3);
    --border-radius: 12px;
    --transition-fast: all 0.3s ease;
    --transition-medium: all 0.5s ease;
    --transition-slow: all 0.8s ease;
    --border-glow: 0 0 10px var(--glow-color);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

main {
    flex: 1;
    position: relative;
    z-index: 1;
}

/* Futuristic Shapes */
.shape {
    position: absolute;
    z-index: -1;
    opacity: 0.3;
    filter: blur(50px);
    transition: var(--transition-slow);
}

.shape-1 {
    top: -150px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    border-radius: 50%;
}

.shape-2 {
    bottom: -100px;
    left: -200px;
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-gradient-end), var(--primary-gradient-start));
    border-radius: 50%;
}

/* Gradient Background */
.bg-gradient {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    color: white;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 100;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.navbar-brand::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: white;
    transform: translateX(-100%);
    transition: var(--transition-fast);
}

.navbar-brand:hover::after {
    transform: translateX(0);
}

.nav-link {
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: white;
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition-medium);
    overflow: hidden;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--hover-shadow);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    color: white;
    font-weight: 600;
    border: none;
    padding: 1.2rem 1.5rem;
    position: relative;
    overflow: hidden;
}

.card-header::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: var(--transition-slow);
}

.card:hover .card-header::before {
    left: 100%;
}

/* Buttons */
.btn {
    border-radius: 50px;
    padding: 0.6rem 1.8rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
    box-shadow: var(--button-shadow);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
    z-index: -1;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    box-shadow: 0 5px 15px rgba(78, 84, 200, 0.4);
    transform: translateY(-2px);
}

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

.btn-accent {
    background-color: var(--accent-color);
    border: none;
    color: white;
}

.btn-accent:hover {
    background-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(255, 87, 34, 0.4);
    transform: translateY(-2px);
}

/* Form Controls */
.form-control {
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    border: 1px solid #e0e0e0;
    transition: var(--transition-fast);
    background-color: rgba(255, 255, 255, 0.9);
}

.form-control:focus {
    box-shadow: var(--border-glow);
    border-color: var(--primary-color);
    background-color: white;
}

.form-select {
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    border: 1px solid #e0e0e0;
    transition: var(--transition-fast);
    background-color: rgba(255, 255, 255, 0.9);
}

.form-select:focus {
    box-shadow: var(--border-glow);
    border-color: var(--primary-color);
    background-color: white;
}

/* Enhanced Upload Area Styles */
.upload-area, .dropzone {
    border: 2px dashed #4e54c8 !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 30px;
}

.upload-area:hover, 
.upload-area:focus, 
.upload-area.dragover, 
.dropzone:hover, 
.dropzone:focus, 
.dropzone.dragover {
    background-color: rgba(78, 84, 200, 0.05);
    border-color: #8f94fb !important;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.upload-area.dragover, .dropzone.dragover {
    background-color: rgba(78, 84, 200, 0.1);
    border-color: #4e54c8 !important;
    border-style: solid !important;
}

.upload-area .upload-icon {
    transition: transform 0.3s ease;
}

.upload-area::after {
    content: "";
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath fill='%234e54c8' d='M572.694 292.093L500.27 416.248A63.997 63.997 0 0 1 444.989 448H45.025c-18.523 0-30.064-20.093-20.731-36.093l72.424-124.155A64 64 0 0 1 152 256h399.964c18.523 0 30.064 20.093 20.73 36.093zM152 224h328v-48c0-26.51-21.49-48-48-48H272l-64-64H48C21.49 64 0 85.49 0 112v278.046l69.077-118.418C86.214 242.25 117.989 224 152 224z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    opacity: 0.1;
}

/* File Cards */
.file-card {
    display: flex;
    align-items: center;
    padding: 1.2rem;
    background-color: white;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--transition-fast);
    border-left: 4px solid var(--primary-color);
}

.file-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    background-color: rgba(143, 148, 251, 0.05);
}

.file-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 1.2rem;
    transition: var(--transition-fast);
}

.file-card:hover .file-icon {
    transform: scale(1.1);
}

.file-info {
    flex-grow: 1;
}

.file-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    transition: var(--transition-fast);
}

.file-card:hover .file-name {
    color: var(--primary-color);
}

.file-meta {
    color: #777;
    font-size: 0.85rem;
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

/* Alerts */
.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 1rem 1.5rem;
}

/* Progress Bar */
.progress {
    height: 0.75rem;
    border-radius: 50px;
    background-color: #e0e0e0;
    margin-bottom: 1rem;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(to right, var(--primary-gradient-start), var(--primary-gradient-end));
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: progressShine 2s infinite linear;
}

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

/* Hero Section */
.hero-section {
    padding: 5rem 0;
    position: relative;
}

.hero-section h1 {
    font-weight: 800;
    background: linear-gradient(to right, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1.5rem;
}

.hero-section p.lead {
    color: #555;
    max-width: 800px;
    margin: 0 auto 2.5rem;
    font-size: 1.25rem;
}

/* Features Section */
.features-section .card {
    height: 100%;
    text-align: center;
    padding: 2rem 1.5rem;
    transition: var(--transition-medium);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
}

.features-section .card::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    border-radius: 50%;
    opacity: 0.1;
    transition: var(--transition-medium);
}

.features-section .card:hover::before {
    transform: scale(10);
    opacity: 0.05;
}

.features-section .card:hover {
    transform: translateY(-15px);
}

.features-section .card i {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition-fast);
}

.features-section .card:hover i {
    transform: scale(1.2);
    color: var(--primary-gradient-start);
}

.features-section .card h3 {
    margin-bottom: 1rem;
    font-weight: 600;
}

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

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

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

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

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

/* Page Transitions */
.page-transition {
    animation: fadeIn 0.5s ease forwards;
}

/* Custom Classes for Special Effects */
.text-gradient {
    background: linear-gradient(to right, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hover-glow:hover {
    box-shadow: var(--border-glow);
}

.card-hover-border {
    border-bottom: 3px solid transparent;
    transition: var(--transition-fast);
}

.card-hover-border:hover {
    border-bottom: 3px solid var(--primary-color);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .upload-area {
        padding: 2rem;
    }
    
    .file-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .file-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
    
    .file-actions {
        margin-top: 1rem;
        width: 100%;
        justify-content: space-between;
    }
    
    .hero-section {
        padding: 3rem 0;
    }
    
    .hero-section h1 {
        font-size: 2.2rem;
    }
    
    .shape-1, .shape-2 {
        width: 300px;
        height: 300px;
    }
} 
/* Preview Functionality Styles */
.preview-section {
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    padding: 1rem;
    background-color: #f8f9fa;
}

.image-preview img {
    max-width: 100%;
    height: auto;
    transition: transform 0.3s ease;
    border: 1px solid #dee2e6;
}

.image-preview img:hover {
    transform: scale(1.02);
    cursor: pointer;
}

.video-preview video {
    max-width: 100%;
    height: auto;
    border: 1px solid #dee2e6;
}

.preview-section h5 {
    color: #495057;
    margin-bottom: 0;
}

#toggleBtn {
    transition: all 0.3s ease;
}

#toggleBtn:hover {
    transform: translateY(-1px);
}

/* Modal improvements for image viewing */
.modal-dialog.modal-lg {
    max-width: 90vw;
}

#modalImage {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .preview-section {
        padding: 0.75rem;
    }
    
    .image-preview img,
    .video-preview video {
        max-height: 300px;
    }
}

/* Loading state for preview */
.preview-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: #6c757d;
}

.preview-loading i {
    animation: spin 1s linear infinite;
}

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