/* ============================================
   EOLAS NUA TEORANTA - DESIGN SYSTEM
   Modern CSS with Variables & Advanced Effects
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Background Colors - Light Theme */
    --color-light-bg: #FFFFFF;
    --color-light-secondary: #F8FAFC;
    --color-light-tertiary: #F1F5F9;
    --color-light-accent: #EFF6FF;

    /* Text Colors - Light Theme */
    --color-text-primary: #0F172A;
    --color-text-secondary: #334155;
    --color-text-tertiary: #64748B;
    --color-text-muted: #94A3B8;

    /* Color Palette - Primary (adjusted for light bg) */
    --color-primary-blue: #2563EB;
    --color-primary-purple: #7C3AED;
    --color-primary-red: #DC2626;
    --color-primary-green: #059669;
    --color-primary-orange: #EA580C;

    /* Color Palette - Extended */
    --color-cyan: #0891B2;
    --color-indigo: #4F46E5;
    --color-pink: #DB2777;
    --color-teal: #0D9488;

    /* Neutral Colors */
    --color-dark-bg: #0A0E1A;
    --color-dark-secondary: #1A1F2E;
    --color-gray-900: #111827;
    --color-gray-800: #1F2937;
    --color-gray-700: #374151;
    --color-gray-600: #4B5563;
    --color-gray-500: #6B7280;
    --color-gray-400: #9CA3AF;
    --color-gray-300: #D1D5DB;
    --color-gray-200: #E5E7EB;
    --color-gray-100: #F3F4F6;
    --color-white: #FFFFFF;

    /* Gradients - Light Theme */
    --gradient-primary: linear-gradient(135deg, var(--color-primary-blue) 0%, var(--color-primary-purple) 50%, var(--color-primary-red) 100%);
    --gradient-blue-purple: linear-gradient(45deg, var(--color-primary-blue), var(--color-primary-purple));
    --gradient-purple-pink: linear-gradient(135deg, var(--color-primary-purple), var(--color-pink));
    --gradient-teal-blue: linear-gradient(135deg, var(--color-teal), var(--color-primary-blue));
    --gradient-orange-red: linear-gradient(135deg, var(--color-primary-orange), var(--color-primary-red));
    --gradient-radial: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.08), transparent 70%);
    --gradient-light-bg: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);

    /* Spacing Scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;
    --font-size-8xl: 6rem;

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 9999px;

    /* Shadows - Light Theme */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-neon-blue: 0 0 20px rgba(37, 99, 235, 0.3);
    --shadow-neon-purple: 0 0 20px rgba(124, 58, 237, 0.3);
    --shadow-neon-blue-strong: 0 0 30px rgba(37, 99, 235, 0.5);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-all: all 300ms ease;

    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 10;
    --z-sticky: 20;
    --z-fixed: 30;
    --z-modal-backdrop: 40;
    --z-modal: 50;
    --z-popover: 60;
    --z-tooltip: 70;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--color-light-bg);
    font-family: var(--font-body);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: var(--leading-normal);
}

/* ============================================
   NAVIGATION
   ============================================ */
nav {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, opacity;
}

.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

/* ============================================
   GLASSMORPHISM EFFECTS - LIGHT THEME
   ============================================ */
.glass-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-2xl);
    transition: var(--transition-all);
    box-shadow: var(--shadow-md);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(37, 99, 235, 0.2);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), var(--shadow-neon-blue);
}

.glass-card-strong {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.glass-nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   GRADIENT TEXT
   ============================================ */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-blue {
    background: var(--gradient-blue-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-teal {
    background: var(--gradient-teal-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: var(--transition-all);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-blue-purple);
    color: var(--color-white);
    box-shadow: var(--shadow-neon-blue);
}

.btn-primary:hover {
    box-shadow: var(--shadow-neon-blue-strong);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary-blue);
    color: var(--color-primary-blue);
}

.btn-outline:hover {
    background: var(--color-primary-blue);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-primary);
}

.btn-ghost:hover {
    background: var(--color-light-secondary);
}

/* ============================================
   ANIMATIONS & KEYFRAMES
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(74, 144, 226, 0.5);
    }

    50% {
        box-shadow: 0 0 40px rgba(74, 144, 226, 0.8);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }

    100% {
        background-position: 1000px 0;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Animation Utility Classes */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

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

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

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

/* ============================================
   SCROLL PROGRESS INDICATOR
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-blue-purple);
    z-index: var(--z-fixed);
    transition: width 0.1s ease;
}

/* ============================================
   LOADING SCREEN
   ============================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(74, 144, 226, 0.2);
    border-top-color: var(--color-primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: rgba(26, 31, 46, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-3xl) var(--space-xl);
    z-index: var(--z-modal);
    transition: right 0.3s ease;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   FORM STYLES
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--color-white);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-light-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    transition: var(--transition-all);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary-blue);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-error {
    color: var(--color-primary-red);
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
}

.form-success {
    color: var(--color-primary-green);
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-padding {
    padding: var(--space-4xl) var(--space-lg);
}

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

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-7xl: 3rem;
        --font-size-8xl: 3.5rem;
    }

    .section-padding {
        padding: var(--space-3xl) var(--space-md);
    }
}

@media (max-width: 640px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-6xl: 2rem;
        --font-size-7xl: 2.5rem;
    }
}

/* ============================================
   LOGO STYLING - PREMIUM EFFECTS
   ============================================ */
.logo-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(124, 58, 237, 0.05));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 2px solid rgba(37, 99, 235, 0.15);
    transition: var(--transition-all);
    box-shadow: var(--shadow-sm);
}

.logo-container::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, #4A90E2, #7B68EE, #4A90E2);
    background-size: 200% 200%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    filter: blur(12px);
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.logo-container:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: var(--shadow-md), var(--shadow-neon-blue);
    transform: translateY(-3px);
}

.logo-container:hover::before {
    opacity: 0.5;
}

.logo-image {
    height: 3.5rem;
    width: auto;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
}

.logo-container:hover .logo-image {
    filter: drop-shadow(0 10px 20px rgba(74, 144, 226, 0.5));
    transform: scale(1.08);
}

/* Logo Animation on Load */
@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: scale(0.8) rotate(-5deg);
    }

    60% {
        transform: scale(1.08) rotate(2deg);
    }

    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

.logo-animate-entrance {
    animation: logoEntrance 1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Footer Logo Styling */
.footer-logo-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.08), rgba(123, 104, 238, 0.08));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px solid rgba(74, 144, 226, 0.2);
    transition: var(--transition-all);
    box-shadow: 0 6px 25px rgba(74, 144, 226, 0.1);
}

.footer-logo-container:hover {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.12), rgba(123, 104, 238, 0.12));
    border-color: rgba(74, 144, 226, 0.5);
    box-shadow: 0 10px 40px rgba(74, 144, 226, 0.25);
    transform: translateY(-4px) scale(1.03);
}

.footer-logo-image {
    height: 4rem;
    width: auto;
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.4));
    transition: all 0.4s ease;
}

.footer-logo-container:hover .footer-logo-image {
    filter: drop-shadow(0 12px 24px rgba(74, 144, 226, 0.6));
}

/* Responsive Logo Sizes */
@media (max-width: 768px) {
    .logo-image {
        height: 2.75rem;
    }

    .footer-logo-image {
        height: 3.5rem;
    }
}

@media (max-width: 640px) {
    .logo-image {
        height: 2.5rem;
    }

    .footer-logo-image {
        height: 3rem;
    }

    .logo-container {
        padding: var(--space-sm);
    }
}

/* ============================================
   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-visible {
    outline: 2px solid var(--color-primary-blue);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .logo-animate-entrance {
        animation: none;
    }
}