:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-back-link {
    display: block;
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.auth-back-link:hover {
    color: var(--primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
    display: flex;
    gap: 2rem;
}

.sidebar {
    width: 280px;
    flex-shrink: 0;
}

.main-content {
    flex-grow: 1;
    min-width: 0;
}

.nav-menu {
    list-style: none;
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.nav-item {
    border-bottom: 1px solid var(--border);
}

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

.nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: all 0.2s;
    gap: 12px;
}

.nav-link:hover {
    background-color: var(--bg);
    color: var(--primary);
}

.nav-link.active {
    background-color: rgba(79, 70, 229, 0.05);
    color: var(--primary);
    border-left: 4px solid var(--primary);
}

.nav-icon {
    font-size: 1.25rem;
}

.user-bar {
    background: var(--card-bg);
    padding: 0.75rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.user-info-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    background: #fff;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    display: inline-block;
    text-align: center;
    text-decoration: none;
    width: 100%;
}

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

.btn-secondary {
    background-color: white;
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background-color: #f1f5f9;
}

.finance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.finance-item {
    padding: 1rem;
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    display: block;
    font-weight: 600;
}

.value {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
}

.badge {
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    background: var(--text-muted);
}

.badge.tamamlandı { background-color: var(--success); }
.badge.beklemede { background-color: var(--warning); }
.badge.devam-ediyor { background-color: var(--info); }
.badge.hata-oluştu { background-color: var(--danger); }
.badge.iptal-edildi { background-color: var(--text-muted); }

.quota-info {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
    background: #ecfdf5;
    padding: 4px 12px;
    border-radius: 6px;
    display: inline-block;
}

.search-form {
    display: flex;
    gap: 12px;
}

.search-form input { flex: 1; }
.search-form button { width: auto; }

.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fee2e2;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.content-box {
    background: #fff;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    white-space: pre-line;
}

.decision-box {
    border-left: 4px solid var(--success);
    background: #f0fdf4;
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

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

@media (max-width: 768px) {
    .container {
        display: block;
        padding: 1rem;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: -290px;
        height: 100vh;
        z-index: 1050;
        background-color: var(--card-bg);
        width: 280px;
        transition: transform 0.3s ease-in-out, left 0.3s ease-in-out;
        padding: 2rem 1rem;
        box-shadow: 4px 0 24px rgba(0,0,0,0.1);
        overflow-y: auto;
        border-right: 1px solid var(--border);
    }
    
    .sidebar.active {
        left: 0;
    }

    .main-content {
        width: 100%;
    }

    #menuToggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        padding: 4px;
        border-radius: 4px;
    }
    
    #menuToggle:hover {
        background-color: var(--bg);
    }
}

@media (max-width: 640px) {
    .search-form { 
        flex-direction: column; 
    }
    
    .user-bar { 
        padding: 0.75rem 1rem;
    }
    
    /* On very small screens, hide username to save space */
    .user-name {
        display: none;
    }
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}