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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-attachment: fixed;
    min-height: 100vh;
    padding: 0;
    color: #333;
    line-height: 1.6;
}

/* Top Navigation */
.top-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
}

.logo-icon {
    font-size: 28px;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s;
}

.nav-link:hover {
    background: #667eea;
    color: white;
}

.btn-nav {
    background: #667eea;
    color: white !important;
}

.btn-nav:hover {
    background: #5568d3;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 60px 20px 40px;
    color: white;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5em;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3em;
    font-weight: 300;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.main-card {
    background: white;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    padding: 40px;
    margin-bottom: 40px;
}

.card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
    border-radius: 16px;
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 40px;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2em;
    font-weight: 700;
    color: #667eea;
    line-height: 1;
}

.stat-label {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}

/* Form Styles */
.form-container {
    margin-top: 30px;
}

.shorten-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.label-icon {
    font-size: 18px;
}

.optional {
    font-weight: 400;
    color: #999;
    font-size: 12px;
}

.input-wrapper {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 16px 50px 16px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.input-icon {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    pointer-events: none;
}

.form-hint {
    color: #999;
    font-size: 12px;
    margin-top: -5px;
}

.submit-btn {
    padding: 18px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-icon {
    font-size: 20px;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
}

.input-group button {
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.input-group button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Message Styles */
.message {
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 25px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.message-text {
    flex: 1;
    font-weight: 500;
}

.message.success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border: 2px solid #b8dacc;
}

.message.error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 2px solid #f1b0b7;
}

.short-url-box {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid rgba(0, 0, 0, 0.1);
}

.short-url-label {
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.short-url-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.short-url-input-group input {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid #667eea;
    border-radius: 12px;
    font-size: 16px;
    background: #f8f9ff;
    font-family: 'Courier New', monospace;
    color: #667eea;
    font-weight: 600;
}

.copy-btn {
    padding: 14px 24px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.short-url-share {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.short-url-share > span {
    font-weight: 600;
    color: #666;
}

.share-btn {
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.share-btn.twitter {
    background: #1da1f2;
    color: white;
}

.share-btn.facebook {
    background: #1877f2;
    color: white;
}

.share-btn.whatsapp {
    background: #25d366;
    color: white;
}

.share-btn.qr {
    background: #333;
    color: white;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Features Section */
.features-section {
    margin-top: 60px;
    text-align: center;
}

.section-title {
    font-size: 2.5em;
    font-weight: 700;
    color: white;
    margin-bottom: 40px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.3em;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.feature-card p {
    color: #666;
    font-size: 0.95em;
}

/* Auth Pages */
.auth-container {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-card {
    background: white;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    padding: 40px;
    max-width: 500px;
    width: 100%;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 2.5em;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.auth-header p {
    color: #666;
    font-size: 1.1em;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.auth-btn {
    margin-top: 10px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.required {
    color: #dc3545;
}

/* User Panel */
.user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 30px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.user-header h1 {
    font-size: 2.5em;
    font-weight: 700;
    color: #333;
    margin-bottom: 5px;
}

.user-header p {
    color: #666;
    font-size: 1.1em;
}

.links-list {
    padding: 20px;
}

.link-item {
    padding: 25px;
    border-bottom: 1px solid #f0f0f0;
    transition: background 0.3s;
}

.link-item:hover {
    background: #f8f9ff;
}

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

.link-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.link-code {
    display: flex;
    align-items: center;
    gap: 10px;
}

.link-code strong {
    font-size: 1.3em;
    color: #667eea;
    font-family: 'Courier New', monospace;
}

.link-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.link-status.active {
    background: #d4edda;
    color: #155724;
}

.link-status.inactive {
    background: #f8d7da;
    color: #721c24;
}

.link-actions {
    display: flex;
    gap: 10px;
}

.btn-icon {
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 18px;
    transition: all 0.3s;
    background: #f0f0f0;
}

.btn-icon:hover {
    background: #667eea;
    transform: translateY(-2px);
}

.btn-icon.danger:hover {
    background: #dc3545;
}

.link-url {
    margin: 10px 0;
    word-break: break-all;
}

.link-url a {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
}

.link-url a:hover {
    text-decoration: underline;
}

.link-title {
    font-weight: 600;
    color: #333;
    margin: 10px 0;
}

.link-meta {
    display: flex;
    gap: 20px;
    margin: 15px 0;
    font-size: 13px;
    color: #999;
    flex-wrap: wrap;
}

.link-short-url {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.short-url-input {
    flex: 1;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    background: #f8f9fa;
}

.copy-btn-small {
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.copy-btn-small:hover {
    background: #5568d3;
    transform: translateY(-2px);
}

/* Footer */
.main-footer {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    margin-top: 60px;
    text-align: center;
    color: white;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Admin panel stilleri */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.admin-header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.admin-table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #333;
}

tr:hover {
    background: #f8f9fa;
}

.btn {
    padding: 8px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.stat-card h3 {
    color: #667eea;
    font-size: 2em;
    margin-bottom: 5px;
}

.stat-card p {
    color: #666;
    font-size: 14px;
}

.btn-warning {
    background: #ffc107;
    color: #000;
}

.btn-warning:hover {
    background: #e0a800;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 12px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2em;
    }
    
    .hero-subtitle {
        font-size: 1.1em;
    }
    
    .main-card {
        padding: 25px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .short-url-input-group {
        flex-direction: column;
    }
    
    .short-url-share {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }
    
    /* Admin Panel Responsive */
    .admin-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start !important;
    }
    
    .admin-header > div:last-child {
        width: 100%;
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }
    
    table {
        font-size: 14px;
    }
    
    th, td {
        padding: 10px 8px;
    }
    
    .btn {
        padding: 6px 10px;
        font-size: 12px;
    }
}