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

:root {
    --primary-color: #ED1C24;
    --secondary-color: #C41E3A;
    --success-color: #10b981;
    --danger-color: #DC143C;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --text-color: #374151;
    --border-color: #e5e7eb;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, #ED1C24 0%, #8B0000 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-brand .logo {
    height: 40px;
    margin-right: 10px;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.navbar-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.navbar-menu a:hover {
    color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(237, 28, 36, 0.4);
}

.btn-secondary {
    background: var(--light-color);
    color: var(--text-color);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 5rem 0;
    color: white;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s 0.2s backwards;
}

.hero .btn {
    animation: fadeInUp 1s 0.4s backwards;
}

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Auth Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    background: white;
    border-radius: 16px;
    padding: 3rem;
    max-width: 450px;
    width: 100%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

/* Dashboard */
.dashboard-header {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #ED1C24, #C41E3A);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
}

.stat-card h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* File List */
.file-list {
    display: grid;
    gap: 1rem;
}

.file-item {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.file-item:hover {
    transform: translateX(5px);
}

.file-info {
    flex: 1;
}

.file-info h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.file-meta {
    color: #6b7280;
    font-size: 0.9rem;
}

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

/* Upload Area */
.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    background: var(--light-color);
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: white;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: #ffe5e5;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    animation: slideInDown 0.5s;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--primary-color);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-color);
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
}

table th,
table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

table tr:hover {
    background: var(--light-color);
}

/* Pagination */
.pagination {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.pagination li {
    display: inline-block;
}

.pagination a {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s;
}

.pagination a:hover,
.pagination .active a {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .file-item {
        flex-direction: column;
        gap: 1rem;
    }

    .file-actions {
        width: 100%;
        justify-content: center;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--light-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

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