@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Kurumsal Renkler (#c0392b: Kırmızı, #35404b: Lacivert/Koyu Gri) */
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #35404b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --primary-color: #c0392b;
    --primary-hover: #a93226;
    --secondary-brand: #35404b;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-color: #1a202c;
    --surface-color: #2d3748;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e0;
    --border-color: #4a5568;
    --primary-color: #e74c3c;
    --primary-hover: #c0392b;
    --secondary-brand: #4a5568;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    transition: var(--transition);
    min-height: 100vh;
}

/* Genel Sınıflar */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.input-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

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

.input-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: inherit;
}

.input-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    outline: none;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: none;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

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

.auth-card {
    background-color: var(--surface-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    animation: slideUp 0.5s ease;
}

.auth-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.auth-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Animasyonlar */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    display: none;
    margin-left: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.theme-toggle {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
}