/* ============================================
   GLOBAL STYLES - Base Colors, Fonts, Layout
   ============================================ */

:root {
    /* Color Palette */
    --primary-color: #00ff88;
    --primary-glow: #00ff8855;
    --secondary-color: #0088ff;
    --secondary-glow: #0088ff55;
    --accent-color: #ff0088;
    --accent-glow: #ff008855;
    --dark-bg: #0f0f23;
    --darker-bg: #0a0a15;
    --card-bg: #1a1a2e;
    --card-light: #16213e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #00ff8833;
    --border-light: #ffffff11;
    
    /* Light Mode */
    --light-primary: #e0e0e0;
    --light-card: #ffffff;
    --light-bg: #f5f5f5;
    --light-text: #1a1a1a;
    --light-text-secondary: #666666;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.3);
    --shadow-glow-accent: 0 0 20px rgba(255, 0, 136, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Font Sizes */
    --font-xs: 12px;
    --font-sm: 14px;
    --font-base: 16px;
    --font-lg: 20px;
    --font-xl: 24px;
    --font-2xl: 32px;
    --font-3xl: 48px;
}

/* Dark Mode (Default) */
body {
    --bg: var(--dark-bg);
    --bg-secondary: var(--card-bg);
    --text: var(--text-primary);
    --text-muted: var(--text-secondary);
    --border: var(--border-color);
}

/* Light Mode */
body.light-mode {
    --bg: var(--light-bg);
    --bg-secondary: var(--light-card);
    --text: var(--light-text);
    --text-muted: var(--light-text-secondary);
    --border: #e0e0e0;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
    position: relative;
}

/* ============================================
   BACKGROUND EFFECTS
   ============================================ */

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle at 20% 50%,
        rgba(0, 255, 136, 0.05) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 80% 80%,
        rgba(0, 136, 255, 0.05) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 40% 20%,
        rgba(255, 0, 136, 0.03) 0%,
        transparent 50%
    );
    pointer-events: none;
    z-index: -2;
}

.animated-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 255, 136, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
    animation: gridScroll 20s linear infinite;
}

@keyframes gridScroll {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(50px);
    }
}

/* ============================================
   MAIN LAYOUT
   ============================================ */

.main-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: var(--spacing-xl);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: var(--font-2xl);
}

h2 {
    font-size: var(--font-xl);
}

p {
    color: var(--text-muted);
}

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

a:hover {
    color: var(--secondary-color);
}

/* ============================================
   BUTTONS - BASE STYLES
   ============================================ */

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary Button */
.primary-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--dark-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-sm);
    box-shadow: var(--shadow-glow);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    justify-content: center;
}

.primary-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-color);
}

.primary-btn:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary Button */
.secondary-btn {
    background: transparent;
    color: var(--primary-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--border);
    font-weight: 600;
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
}

.secondary-btn:hover:not(:disabled) {
    background: var(--primary-glow);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

/* ============================================
   INPUTS & CONTROLS
   ============================================ */

input[type="text"],
input[type="email"],
input[type="url"],
input[type="tel"],
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
    font-size: var(--font-base);
    font-family: inherit;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="tel"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(0, 255, 136, 0.05);
    box-shadow: 0 0 15px var(--primary-glow);
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-md);
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

input[type="color"] {
    width: 100%;
    height: 50px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

input[type="color"]:hover {
    box-shadow: var(--shadow-glow);
}

/* ============================================
   GLASSMORPHISM PANELS
   ============================================ */

.glass-panel {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    transition: all var(--transition-normal);
}

.glass-panel:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ============================================
   SCROLL BEHAVIOR
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* ============================================
   TEXT SELECTION
   ============================================ */

::selection {
    background: var(--primary-color);
    color: var(--dark-bg);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--dark-bg);
}