/* ========================================
   VETİS - Veritabanı Erişim Sistemi
   Balıkesir Üniversitesi
   ======================================== */

:root {
    --primary: #1a3c6e;
    --primary-light: #2a5298;
    --primary-dark: #0f2847;
    --accent: #c0392b;
    --accent-light: #e74c3c;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ========================================
   Navbar
   ======================================== */
.navbar {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: var(--white);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    min-height: 64px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.navbar-brand img {
    height: 44px;
    width: auto;
}

.navbar-brand-text {
    display: flex;
    flex-direction: column;
}

.navbar-brand h1 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    line-height: 1.2;
}

.navbar-brand h1 a {
    color: var(--white);
    text-decoration: none;
}

.navbar-subtitle {
    font-size: 11px;
    opacity: 0.75;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 14px;
}

.navbar-user > span {
    opacity: 0.9;
    font-weight: 500;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: 8px;
    line-height: 1;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    color: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.btn-sm.btn-outline {
    border-color: rgba(255,255,255,0.5);
    color: var(--white);
}

.btn-sm.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.15);
    color: var(--white);
}

/* ========================================
   Login Page
   ======================================== */
.login-page {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    background: #f1f3f6;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header img {
    height: 80px;
    width: 80px;
    margin-bottom: 16px;
    border-radius: 50%;
    object-fit: cover;
}

.login-header h1 {
    font-size: 26px;
    color: var(--primary);
    font-weight: 800;
    letter-spacing: 2px;
    line-height: 1.2;
    margin-bottom: 6px;
}

.login-header p {
    color: var(--gray-500);
    font-size: 14px;
}

.login-header .university-name {
    color: var(--gray-600);
    font-size: 13px;
    font-weight: 600;
    margin-top: 4px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
}

.form-group input {
    padding: 12px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
    background: var(--gray-50);
    color: var(--gray-800);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.15);
    background: var(--white);
}

.form-group input::placeholder {
    color: var(--gray-400);
}

.login-form .btn-primary {
    margin-top: 6px;
    padding: 12px;
    font-size: 15px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
}

.login-footer p {
    color: var(--gray-400);
    font-size: 12px;
    line-height: 1.6;
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    padding-top: 88px;
    flex: 1;
    width: 100%;
}

/* ========================================
   Search Bar
   ======================================== */
.search-bar {
    margin-bottom: 20px;
}

.search-bar form {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-bar input {
    flex: 1;
    padding: 12px 18px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 15px;
    background: var(--white);
    transition: var(--transition);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

/* ========================================
   Proxy Bar (direct URL input)
   ======================================== */
.proxy-bar {
    background: var(--white);
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.proxy-bar label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 8px;
}

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

.proxy-input-group input {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
}

.proxy-input-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

/* ========================================
   Database Category & Cards
   ======================================== */
.db-category {
    margin-bottom: 32px;
}

.db-category h2 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.db-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 14px;
}

.db-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 20px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    text-decoration: none;
    color: var(--gray-800);
}

.db-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    color: var(--gray-800);
}

.db-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

.db-card-info {
    flex: 1;
    min-width: 0;
}

.db-card-info h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 2px;
}

.db-card-info p {
    font-size: 12px;
    color: var(--gray-500);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.db-card-arrow {
    font-size: 18px;
    color: var(--gray-300);
    transition: var(--transition);
    flex-shrink: 0;
}

.db-card:hover .db-card-arrow {
    color: var(--primary);
    transform: translateX(3px);
}

/* ========================================
   Welcome / Dashboard Page
   ======================================== */
.dashboard-page {
    background: linear-gradient(160deg, var(--gray-100) 0%, #dbeafe 50%, var(--gray-100) 100%);
}

.welcome-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 64px - 50px);
    padding: 24px;
}

.welcome-card {
    background: #f0f4f8;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    padding: 48px 56px;
    text-align: center;
    max-width: 520px;
    width: 100%;
}

.welcome-logo {
    height: 90px;
    width: auto;
    margin-bottom: 20px;
    object-fit: contain;
}

.welcome-card h2 {
    font-size: 22px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 10px;
}

.welcome-desc {
    color: var(--gray-500);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 28px;
}

.welcome-hint {
    color: var(--gray-500);
    font-size: 13px;
    margin-top: 12px;
    margin-bottom: 0;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

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

.welcome-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 28px 0;
}

.proxy-bar-inline label {
    display: block;
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 10px;
}

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

.proxy-bar-inline .proxy-input-group input {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
}

.proxy-bar-inline .proxy-input-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

@media (max-width: 768px) {
    .welcome-card {
        padding: 32px 22px;
    }

    .welcome-logo {
        height: 70px;
    }

    .welcome-card h2 {
        font-size: 18px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 15px;
        width: 100%;
    }

    .proxy-bar-inline .proxy-input-group {
        flex-direction: column;
    }

    .proxy-bar-inline .proxy-input-group .btn {
        width: 100%;
    }
}

/* ========================================
   Database Listing
   ======================================== */
.db-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 20px;
}

.db-header {
    text-align: center;
    margin-bottom: 32px;
}

.db-header h2 {
    font-size: 22px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 6px;
}

.db-header p {
    color: var(--gray-500);
    font-size: 14px;
}

.db-category {
    margin-bottom: 28px;
}

.db-category-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gray-200);
}

.db-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.db-card {
    display: block;
    background: var(--white);
    border: 1.5px solid var(--gray-200);
    border-radius: 10px;
    padding: 16px 20px;
    text-decoration: none;
    transition: var(--transition);
}

.db-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.db-card-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 4px;
}

.db-card-desc {
    font-size: 12px;
    color: var(--gray-400);
    line-height: 1.4;
}

/* ========================================
   Extension Banner
   ======================================== */
.ext-banner {
    background: var(--white);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-lg);
    margin-bottom: 28px;
    overflow: hidden;
}

.ext-banner-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 22px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    cursor: default;
}

.ext-banner-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.ext-banner-title {
    flex: 1;
}

.ext-banner-title strong {
    display: block;
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 2px;
}

.ext-banner-title span {
    font-size: 13px;
    color: var(--gray-500);
}

.ext-banner-toggle {
    background: none;
    border: none;
    font-size: 14px;
    color: var(--gray-400);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.ext-banner-toggle:hover {
    background: rgba(0,0,0,0.05);
    color: var(--gray-600);
}

.ext-banner-body {
    padding: 22px;
    border-top: 1px solid #bfdbfe;
}

.ext-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

.ext-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ext-step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.ext-step-content {
    flex: 1;
}

.ext-step-content strong {
    display: block;
    font-size: 14px;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.ext-step-content p {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 8px;
}

.ext-step-content code {
    background: #e0e7ff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--primary);
}

.ext-alt {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 14px 18px;
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.7;
}

.ext-alt strong {
    color: var(--gray-700);
}

.ext-alt code {
    background: var(--gray-200);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
    color: var(--gray-700);
}

.ext-alt a {
    color: var(--primary-light);
    font-weight: 600;
}

@media (max-width: 600px) {
    .ext-banner-header {
        padding: 14px 16px;
    }
    .ext-banner-body {
        padding: 16px;
    }
    .ext-step {
        gap: 12px;
    }
    .ext-step-num {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
}

.db-search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    background: var(--white);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 4px 16px;
    transition: var(--transition);
}

.db-search-box:focus-within {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

.db-search-box input {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 0;
    font-size: 15px;
    background: transparent;
    color: var(--gray-800);
}

.db-search-box input::placeholder {
    color: var(--gray-400);
}

.db-count {
    font-size: 13px;
    color: var(--gray-400);
    white-space: nowrap;
    flex-shrink: 0;
}

.db-no-result {
    text-align: center;
    padding: 48px 20px;
    color: var(--gray-400);
    font-size: 15px;
}

.welcome-panel {
    text-align: center;
    padding: 20px 0;
}

.welcome-panel h2 {
    margin-bottom: 8px;
}

.welcome-panel > p {
    color: var(--gray-400);
    margin-bottom: 32px;
}

.btn-library {
    display: flex;
    align-items: center;
    gap: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    text-decoration: none;
    padding: 20px 28px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(42, 82, 152, 0.3);
    transition: var(--transition);
    max-width: 480px;
    margin: 0 auto 40px;
}

.btn-library:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(42, 82, 152, 0.4);
}

.btn-library-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.btn-library-text {
    text-align: left;
    flex: 1;
}

.btn-library-text strong {
    display: block;
    font-size: 17px;
    margin-bottom: 2px;
}

.btn-library-text small {
    font-size: 13px;
    opacity: 0.8;
}

.btn-library-arrow {
    font-size: 24px;
    opacity: 0.6;
    flex-shrink: 0;
}

.welcome-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 560px;
    margin: 0 auto;
}

.info-card {
    display: flex;
    gap: 12px;
    text-align: left;
    padding: 16px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 10px;
}

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

.info-card-text strong {
    display: block;
    font-size: 13px;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.info-card-text p {
    font-size: 12px;
    color: var(--gray-400);
    line-height: 1.5;
    margin: 0;
}

@media (max-width: 600px) {
    .welcome-info {
        grid-template-columns: 1fr;
    }
    .btn-library {
        padding: 16px 20px;
    }
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    padding: 12px 18px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 18px;
    border: 1px solid;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-warning {
    background: #fffbeb;
    color: #92400e;
    border-color: #fed7aa;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border-color: #bfdbfe;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-color: #bbf7d0;
}

/* ========================================
   Error Page
   ======================================== */
.error-page {
    text-align: center;
    padding: 60px 20px;
}

.error-page h2 {
    font-size: 24px;
    color: var(--danger);
    margin-bottom: 12px;
}

.error-page p {
    color: var(--gray-500);
    margin-bottom: 8px;
}

.error-page code {
    background: var(--gray-100);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--gray-600);
}

.error-page .btn {
    margin-top: 24px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.7);
    text-align: center;
    padding: 18px 24px;
    font-size: 13px;
    margin-top: auto;
}

.footer a {
    color: rgba(255,255,255,0.85);
}

.footer a:hover {
    color: var(--white);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .navbar {
        padding: 0 14px;
        min-height: 56px;
        flex-wrap: wrap;
        gap: 4px;
    }

    .navbar-brand img {
        height: 34px;
    }

    .navbar-brand h1 {
        font-size: 15px;
    }

    .navbar-subtitle {
        font-size: 10px;
    }

    .navbar-user {
        font-size: 12px;
        gap: 8px;
    }

    .navbar-user > span {
        display: none;
    }

    .container {
        padding: 16px;
    }

    .login-container {
        padding: 28px 22px;
    }

    .login-header img {
        height: 60px;
        width: 60px;
    }

    .login-header h1 {
        font-size: 22px;
    }

    .search-bar form {
        flex-direction: column;
    }

    .search-bar .btn {
        width: 100%;
    }

    .proxy-bar {
        padding: 14px;
    }

    .proxy-input-group {
        flex-direction: column;
    }

    .proxy-input-group .btn {
        width: 100%;
    }

    .db-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .db-card {
        padding: 14px;
        gap: 12px;
    }

    .db-card-icon {
        width: 42px;
        height: 42px;
        font-size: 13px;
    }

    .db-card-info h3 {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .login-page {
        padding: 12px;
        align-items: flex-start;
        padding-top: 40px;
    }

    .login-container {
        padding: 24px 18px;
    }

    .login-header h1 {
        font-size: 20px;
    }

    .navbar-brand {
        gap: 8px;
    }

    .navbar-brand img {
        height: 28px;
    }
}