/*=============================================
=            Table of Contents                =
=============================================*/
/**
 * 1.  CSS CUSTOM PROPERTIES
 * 2.  RESET & BASE STYLES
 * 3.  TYPOGRAPHY
 * 4.  LAYOUT
 * 5.  LOADING ANIMATIONS
 * 6.  SKELETON LOADERS
 * 7.  UTILITY CLASSES
 * 8.  THEME SWITCHER (FUTURE)
 * 9.  MEDIA QUERIES
 */

/*=============================================
=         1. CSS CUSTOM PROPERTIES            =
=============================================*/
:root {
    /* Color Palette - "Piemon" Theme (from config.h) */
    --accent-color: #830b19; /* UI_COLOR_SELECTOR */
    --accent-hover-color: #6a0915; /* Darker version of accent */
    --secondary-bg-color: #3d0a15; /* Lighter version of background */
    --text-color-primary: #daa93b; /* UI_COLOR_TEXT_TOP */
    --text-color-secondary: #c27517; /* UI_COLOR_TEXT_BOTTOM */
    --background-color: #300610; /* UI_COLOR_BACKGROUND */
    --border-color: #daa93b; /* UI_COLOR_BORDER */
    
    /* Navbar/Footer specific */
    --navbar-footer-bg: #300610; /* UI_COLOR_BACKGROUND */
    --navbar-footer-text-color: #c27517; /* UI_COLOR_TEXT_BOTTOM */
    --navbar-footer-text-hover-color: #daa93b; /* UI_COLOR_TEXT_TOP */
    
    /* Typography */
    --font-family-base: 'GNF', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.65;
    
    /* Typography Scale with Clamp */
    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --font-size-md: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --font-size-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --font-size-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
    --font-size-3xl: clamp(2rem, 1.5rem + 2vw, 2.5rem);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    
    /* Layout */
    --navbar-height: 70px;
    --container-max-width: 960px;
    --container-padding-horizontal: var(--spacing-lg);
    
    /* Borders and Shadows */
    --border-radius-sm: 4px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-full: 50%;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index Scale */
    --z-navbar: 1000;
    --z-modal: 2000;
    --z-loading: 3000;
}

/* Dark Theme Preparation (not active yet) */
[data-theme="dark"] {
    --background-color: #1a0308;
    --secondary-bg-color: #2a050c;
    --text-color-primary: #daa93b;
    --text-color-secondary: #c27517;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.7);
}

/*=============================================
=         2. RESET & BASE STYLES              =
=============================================*/

/* Font Face for GNF */
@font-face {
    font-family: 'GNF';
    src: url('../assets/fonts/GNF.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color-primary); 
    background-color: var(--background-color); 
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/*=============================================
=            3. TYPOGRAPHY                    =
=============================================*/
h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-color-primary);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-color-secondary);
}

a { 
    color: var(--text-color-primary); 
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { 
    color: var(--text-color-secondary); 
    text-decoration: underline;
}

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

strong {
    font-weight: 600;
    color: var(--text-color-primary);
}

/*=============================================
=              4. LAYOUT                      =
=============================================*/
.page-content-wrapper {
    flex-grow: 1; 
    width: 100%;
    background-color: var(--secondary-bg-color); 
    padding-top: var(--navbar-height); 
    display: flex; 
    flex-direction: column; 
    min-height: calc(100vh - var(--navbar-height));
}

.container { 
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding-horizontal);
}

.main-content { 
    padding-top: var(--spacing-xl);
    padding-bottom: calc(var(--spacing-xl) + var(--spacing-lg));
    width: 100%; 
}

/*=============================================
=         5. LOADING ANIMATIONS               =
=============================================*/
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    z-index: var(--z-loading);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.bala-loader {
    transform: scale(2);
}

.bala {
    position: relative;
    width: 60px;
    height: 60px;
    animation: bounce 1.5s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(-5deg); }
    50% { transform: translateY(0) rotate(0deg); }
    75% { transform: translateY(-10px) rotate(5deg); }
}

.bala-upper {
    position: absolute;
    width: 100%;
    height: 50%;
    background-color: #4a4a4a; /* Dark gray Bala */
    border-radius: 30px 30px 0 0;
    border: 3px solid #000000; /* Black pixel art border */
    border-bottom: none;
}

.bala-lower {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 50%;
    background-color: #d3d3d3; /* Light gray Bala */
    border-radius: 0 0 30px 30px;
    border: 3px solid #000000; /* Black pixel art border */
    border-top: none;
}

.bala-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 6px;
    background-color: #000000; /* Black */
}

.bala-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    background-color: #ffffff;
    border: 3px solid #000000; /* Black border */
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

/*=============================================
=          6. SKELETON LOADERS                =
=============================================*/
.skeleton-nav {
    height: var(--navbar-height);
    background: linear-gradient(90deg, var(--secondary-bg-color) 25%, var(--background-color) 50%, var(--secondary-bg-color) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.skeleton-footer {
    height: 90px;
    background: linear-gradient(90deg, var(--secondary-bg-color) 25%, var(--background-color) 50%, var(--secondary-bg-color) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/*=============================================
=          7. UTILITY CLASSES                 =
=============================================*/
/* Badge (for future use) */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    background-color: var(--accent-color);
    color: var(--text-color-primary);
    border: 1px solid var(--border-color);
}

/* Card (for future use) */
.card {
    background-color: var(--background-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 2px solid var(--border-color);
}

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

/* Buttons (for future use) */
.button-primary,
.button-secondary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-md);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid var(--border-color);
    text-align: center;
    font-family: var(--font-family-base);
}

.button-primary {
    background-color: var(--accent-color);
    color: var(--text-color-primary);
}

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

.button-secondary {
    background-color: transparent;
    color: var(--text-color-primary);
    border: 2px solid var(--border-color);
}

.button-secondary:hover {
    background-color: var(--accent-color);
    color: var(--text-color-primary);
}

/*=============================================
=        8. THEME SWITCHER (FUTURE)           =
=============================================*/
.theme-switcher {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-full);
    background-color: var(--background-color);
    box-shadow: var(--shadow-lg);
    display: none; /* Hidden for now */
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: transform var(--transition-base);
    border: 2px solid var(--border-color);
}

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

/*=============================================
=           9. MEDIA QUERIES                  =
=============================================*/
@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
        --container-padding-horizontal: var(--spacing-md);
    }
    
    .main-content {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-xl);
    }
    
    .bala-loader {
        transform: scale(1.5);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }
    
    .bala-loader {
        transform: scale(1);
    }
}