/* ==========================================================================
   Cronica Inteligenței Artificiale România - Main Stylesheet
   Futuristic Neural Network Aesthetic with Violet Gradients
   ========================================================================== */

/* Import Fonts from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Audiowide&family=Noto+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=VT323&display=swap');

/* ==========================================================================
   CSS Reset & Base Styles
   ========================================================================== */

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

:root {
    /* Color Palette */
    --color-violet-deep: #1A0033;
    --color-violet-mid: #6A1B9A;
    --color-neon-cyan: #00FFFF;
    --color-neon-lime: #C6FF00;
    --color-dark-bg: #212121;
    --color-darker-bg: #0A0A0A;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-text-muted: #707070;
    
    /* Gradients */
    --gradient-main: linear-gradient(135deg, #1A0033 0%, #6A1B9A 100%);
    --gradient-neural: linear-gradient(180deg, rgba(26, 0, 51, 0.95) 0%, rgba(106, 27, 154, 0.85) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
    
    /* Typography */
    --font-display: 'Audiowide', cursive;
    --font-body: 'Noto Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-retro: 'VT323', monospace;
    
    /* Font Sizes */
    --font-size-xl: 48px;
    --font-size-lg: 36px;
    --font-size-md: 24px;
    --font-size-base: 18px;
    --font-size-sm: 14px;
    
    /* Line Height */
    --line-height: 1.65;
    
    /* Container Widths */
    --width-jumbo: 100%;
    --width-wide: 1400px;
    --width-medium: 1000px;
    --width-compact: 720px;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;
    
    /* Effects */
    --shadow-glow-cyan: 0 0 20px rgba(0, 255, 255, 0.5);
    --shadow-glow-lime: 0 0 20px rgba(198, 255, 0, 0.5);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --border-neon: 2px solid var(--color-neon-cyan);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text-primary);
    background: var(--color-darker-bg);
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-main);
    z-index: -2;
    opacity: 0.95;
}

/* CRT Scanlines Effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15) 0px,
        transparent 1px,
        transparent 2px,
        rgba(0, 0, 0, 0.15) 3px
    );
    pointer-events: none;
    z-index: 9998;
    opacity: 0.3;
}

/* Neural Network Canvas Background */
#neural-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 2px;
}

h1 {
    font-size: var(--font-size-xl);
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-lime));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(0, 255, 255, 0.5);
}

h2 {
    font-size: var(--font-size-lg);
    color: var(--color-neon-cyan);
    text-shadow: var(--shadow-glow-cyan);
}

h3 {
    font-size: var(--font-size-md);
    color: var(--color-neon-lime);
}

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

a {
    color: var(--color-neon-cyan);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

a:hover {
    color: var(--color-neon-lime);
    text-shadow: var(--shadow-glow-lime);
}

/* Label Style with JetBrains Mono */
.label {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-neon-cyan);
    margin-bottom: var(--spacing-xs);
    display: inline-block;
}

/* Timestamp Style with VT323 */
.timestamp {
    font-family: var(--font-retro);
    font-size: 20px;
    color: var(--color-neon-lime);
    letter-spacing: 2px;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */

/* Jumbo Container - Full viewport height */
.container-jumbo {
    width: var(--width-jumbo);
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Wide Container */
.container-wide {
    max-width: var(--width-wide);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

/* Medium Container */
.container-medium {
    max-width: var(--width-medium);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Compact Container */
.container-compact {
    max-width: var(--width-compact);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Neural Grid Layout */
.neural-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

/* ==========================================================================
   Navigation Header
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 0, 51, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-neon-cyan);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.2);
}

.header-content {
    max-width: var(--width-wide);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-family: var(--font-display);
    font-size: 24px;
    color: var(--color-neon-cyan);
    text-shadow: var(--shadow-glow-cyan);
    text-decoration: none;
}

.site-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
}

.site-nav a {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid transparent;
    transition: var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
    border: 1px solid var(--color-neon-cyan);
    background: rgba(0, 255, 255, 0.1);
    box-shadow: var(--shadow-glow-cyan);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: var(--border-neon);
    color: var(--color-neon-cyan);
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: var(--transition);
}

.menu-toggle:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: var(--shadow-glow-cyan);
}

/* ==========================================================================
   Cards & Panels
   ========================================================================== */

.card {
    background: rgba(26, 0, 51, 0.7);
    border: 1px solid rgba(0, 255, 255, 0.3);
    padding: var(--spacing-md);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-lime));
    opacity: 0;
    transition: var(--transition);
    border-radius: 8px;
    z-index: -1;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
    border-color: var(--color-neon-cyan);
}

.card:hover::before {
    opacity: 0.3;
}

.card-title {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
}

.card-content {
    color: var(--color-text-secondary);
}

/* Panel Styles */
.panel {
    background: rgba(33, 33, 33, 0.8);
    border-left: 4px solid var(--color-neon-cyan);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    backdrop-filter: blur(10px);
}

.panel-wide {
    max-width: var(--width-wide);
    margin: var(--spacing-lg) auto;
}

.panel-medium {
    max-width: var(--width-medium);
    margin: var(--spacing-lg) auto;
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */

.btn {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: var(--border-neon);
    background: transparent;
    color: var(--color-neon-cyan);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-neon-cyan);
    transition: var(--transition);
    z-index: -1;
}

.btn:hover {
    color: var(--color-darker-bg);
    box-shadow: var(--shadow-glow-cyan);
}

.btn:hover::before {
    left: 0;
}

.btn-lime {
    border-color: var(--color-neon-lime);
    color: var(--color-neon-lime);
}

.btn-lime::before {
    background: var(--color-neon-lime);
}

.btn-lime:hover {
    box-shadow: var(--shadow-glow-lime);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-neon-cyan);
    display: block;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(33, 33, 33, 0.8);
    border: 1px solid rgba(0, 255, 255, 0.3);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    transition: var(--transition);
    border-radius: 4px;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-neon-cyan);
    box-shadow: var(--shadow-glow-cyan);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-neon-cyan);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: rgba(26, 0, 51, 0.95);
    border-top: 1px solid var(--color-neon-cyan);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: var(--width-wide);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h3 {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    max-width: var(--width-wide);
    margin: var(--spacing-lg) auto 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Holographic Effects
   ========================================================================== */

.holographic {
    position: relative;
    overflow: hidden;
}

.holographic::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(0, 255, 255, 0.3),
        transparent
    );
    transform: rotate(45deg);
    animation: holographic-sweep 3s linear infinite;
}

@keyframes holographic-sweep {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

/* ==========================================================================
   Glowing Circuit Patterns
   ========================================================================== */

.circuit-pattern {
    position: relative;
}

.circuit-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(90deg, rgba(0, 255, 255, 0.1) 0px, transparent 1px, transparent 40px),
        repeating-linear-gradient(0deg, rgba(0, 255, 255, 0.1) 0px, transparent 1px, transparent 40px);
    pointer-events: none;
    opacity: 0.3;
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes pulse-glow {
    0%, 100% {
        opacity: 1;
        filter: brightness(1);
    }
    50% {
        opacity: 0.7;
        filter: brightness(1.3);
    }
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

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

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

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

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

.py-xl {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    :root {
        --font-size-xl: 36px;
        --font-size-lg: 28px;
        --font-size-md: 20px;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-xl: 28px;
        --font-size-lg: 24px;
        --font-size-md: 18px;
        --font-size-base: 16px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .site-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(26, 0, 51, 0.98);
        border-top: 1px solid var(--color-neon-cyan);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .site-nav.active {
        max-height: 500px;
    }
    
    .site-nav ul {
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .neural-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 64px;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus States */
*:focus-visible {
    outline: 2px solid var(--color-neon-cyan);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}