/* Common Global Styles */
:root {
    --primary-color: #6366f1;
    --primary-light: #8b5cf6;
    --primary-dark: #4f46e5;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --bg-dark: #111827;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* Main Content Padding for Fixed Header */
.main-content {
    padding-top: 40px;
}

@media (max-width: 768px) {
    .main-content {
        padding-top: 40px;
    }
}

/* PWA Install Banner - Fixed positioning for mobile visibility */
#pwaInstallBanner {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 16px;
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    z-index: 999 !important;
}

#pwaInstallBanner button {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

#installButton {
    background: white;
    color: #6366f1;
}

#closePwaBanner {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

@media (max-width: 768px) {
    #pwaInstallBanner {
        padding: 14px;
        flex-wrap: wrap;
    }
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

input, textarea, select {
    font-family: inherit;
    outline: none;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.mt-1 { margin-top: 6px; }
.mt-2 { margin-top: 12px; }
.mt-3 { margin-top: 18px; }
.mt-4 { margin-top: 24px; }

.mb-1 { margin-bottom: 6px; }
.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 18px; }
.mb-4 { margin-bottom: 24px; }

.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.p-4 { padding: 32px; }

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(99, 102, 241, 0.1);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.6s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}