/* ========================================
   DEFAULT HEADER STYLES - Tüm Sayfalarda Kullanılacak
   ======================================== */

.page-header {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f1f5f9 100%);
    border-radius: 20px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 4px 16px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.header-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(90deg, #3b82f6, #10b981);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.header-icon i {
    font-size: 24px;
    color: white;
}

.header-title-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.header-title {
    font-size: 28px;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-subtitle {
    font-size: 14px;
    color: #64748b;
    margin: 0;
    font-weight: 400;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.header-action-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.header-action-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header-action-btn i {
    font-size: 16px;
}

/* Primary Action Button */
.header-action-btn.primary {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    border-color: rgba(255, 255, 255, 0.9);
}

.header-action-btn.primary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Success Action Button */
.header-action-btn.success {
    background: rgba(34, 197, 94, 0.9);
    border-color: rgba(34, 197, 94, 0.9);
}

.header-action-btn.success:hover {
    background: #22c55e;
    border-color: #22c55e;
}

/* Info Action Button */
.header-action-btn.info {
    background: rgba(59, 130, 246, 0.9);
    border-color: rgba(59, 130, 246, 0.9);
}

.header-action-btn.info:hover {
    background: #3b82f6;
    border-color: #3b82f6;
}

/* Warning Action Button */
.header-action-btn.warning {
    background: rgba(245, 158, 11, 0.9);
    border-color: rgba(245, 158, 11, 0.9);
}

.header-action-btn.warning:hover {
    background: #f59e0b;
    border-color: #f59e0b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    
    .header-left {
        justify-content: center;
        text-align: center;
    }
    
    .header-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .header-title {
        font-size: 24px;
    }
    
    .header-icon {
        width: 40px;
        height: 40px;
    }
    
    .header-icon i {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    .header-title {
        font-size: 20px;
    }
    
    .header-action-btn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .header-actions {
        gap: 8px;
    }
}

/* Animation for page load */
@keyframes headerSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    animation: headerSlideIn 0.6s ease-out;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .page-header {
        background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    }
}