/* ===================================
   SAVOIA SYSTEMS - MAIN STYLESHEET
   ================================== */

/* CSS Variables & Base Styles */
:root {
    --space-black: #0a0a0a;
    --jet-black: #1a1a1a;
    --steel-gray: #2a2a2a;
    --electric-blue: #0066ff;
    --electric-blue-dark: #0052cc;
    --electric-blue-light: #3385ff;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-400: #9ca3af;
    --gray-600: #6b7280;
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 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: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--space-black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

/* Utility Classes */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 8rem 0;
}

/* Gradient Text Effect */
.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Grid Pattern Background */
.grid-pattern {
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.03) 1px, transparent 0);
    background-size: 40px 40px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--electric-blue);
}

/* ===================================
   NAVIGATION
   ================================== */
#navbar {
    transition: var(--transition-base);
}

#navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 102, 255, 0.1);
}

.nav-link {
    position: relative;
    font-weight: 500;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--electric-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   BUTTONS
   ================================== */
button, .btn {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

.glow-button {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.glow-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: -1;
}

.glow-button:hover::after {
    width: 300px;
    height: 300px;
}

/* Back to Top Button */
#backToTop {
    transition: var(--transition-base);
}

#backToTop.visible {
    opacity: 1;
    visibility: visible;
}

#backToTop:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.3);
}

/* ===================================
   CARDS & BORDERS
   ================================== */
.gradient-border {
    position: relative;
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-slow);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(0, 102, 255, 0.1));
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gradient-border:hover::before {
    opacity: 1;
}

/* Tech Cards */
.tech-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 102, 255, 0.15);
}

/* Feature Cards */
.feature-card {
    transition: var(--transition-slow);
}

.feature-card:hover {
    background: linear-gradient(135deg, #2a2a2a 0%, #252525 100%);
    border-color: rgba(0, 102, 255, 0.3);
}

/* Pricing Cards */
.pricing-card {
    transition: var(--transition-slow);
}

.pricing-card:hover {
    transform: scale(1.02);
}

.premium-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #252525 100%);
    border-color: rgba(0, 102, 255, 0.2);
}

.premium-card:hover {
    border-color: rgba(0, 102, 255, 0.4);
    box-shadow: 0 25px 70px rgba(0, 102, 255, 0.2);
}

/* ===================================
   ANIMATIONS
   ================================== */

/* Fade In */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stat Cards Animation */
.stat-card {
    transition: var(--transition-base);
}

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

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Bounce Animation */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

/* ===================================
   RESPONSIVE UTILITIES
   ================================== */

/* Text Responsive Classes */
.text-responsive-lg {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

.text-responsive-md {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.text-responsive-sm {
    font-size: clamp(0.875rem, 1vw, 1rem);
}

/* Spacing Utilities */
.space-y-4 > * + * {
    margin-top: 1rem;
}

.space-y-6 > * + * {
    margin-top: 1.5rem;
}

.space-y-8 > * + * {
    margin-top: 2rem;
}

/* Grid Utilities */
.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gap-4 {
    gap: 1rem;
}

.gap-6 {
    gap: 1.5rem;
}

.gap-8 {
    gap: 2rem;
}

/* ===================================
   MEDIA QUERIES
   ================================== */

/* Tablet */
@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    
    .md\:flex {
        display: flex;
    }
    
    .md\:flex-row {
        flex-direction: row;
    }
    
    .md\:text-5xl {
        font-size: 3rem;
    }
    
    .md\:text-7xl {
        font-size: 4.5rem;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .lg\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* Mobile Optimization */
@media (max-width: 767px) {
    .section {
        padding: 4rem 0;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .py-32 {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }
    
    .px-6 {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
    
    /* Stack elements vertically on mobile */
    .flex-col {
        flex-direction: column;
    }
    
    .sm\:flex-row {
        flex-direction: column;
    }
}

/* High Resolution Displays */
@media (min-width: 1920px) {
    .container {
        max-width: 1536px;
    }
}

/* ===================================
   ACCESSIBILITY
   ================================== */

/* Focus Styles */
button:focus,
a:focus {
    outline: 2px solid var(--electric-blue);
    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;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Support (already default) */
@media (prefers-color-scheme: dark) {
    body {
        background-color: var(--space-black);
        color: var(--white);
    }
}

/* ===================================
   PRINT STYLES
   ================================== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    nav,
    #backToTop,
    footer {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
    }
}

/* ===================================
   LOADING STATES
   ================================== */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--electric-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* ===================================
   CUSTOM PROPERTIES PER SECTION
   ================================== */

/* Hero Section */
#hero {
    background: radial-gradient(circle at 50% 0%, rgba(0, 102, 255, 0.05) 0%, transparent 50%);
}

/* Services Section */
#servicii {
    background: linear-gradient(180deg, transparent 0%, rgba(0, 102, 255, 0.05) 50%, transparent 100%);
}

/* ===================================
   HELPER CLASSES
   ================================== */
.overflow-hidden {
    overflow: hidden;
}

.overflow-x-hidden {
    overflow-x: hidden;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.z-10 {
    z-index: 10;
}

.z-40 {
    z-index: 40;
}

.z-50 {
    z-index: 50;
}

.flex {
    display: flex;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

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

.rounded-xl {
    border-radius: 0.75rem;
}

.rounded-2xl {
    border-radius: 1rem;
}

.rounded-3xl {
    border-radius: 1.5rem;
}

.rounded-full {
    border-radius: 9999px;
}

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.transition-all {
    transition-property: all;
}

.duration-300 {
    transition-duration: 300ms;
}

.ease {
    transition-timing-function: ease;
}

.backdrop-blur-xl {
    backdrop-filter: blur(24px);
}

/* ===================================
   CUSTOM ANIMATIONS
   ================================== */

/* Slide In From Left */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide In From Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale In */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Apply animations to elements with delay */
.fade-in:nth-child(1) { transition-delay: 0ms; }
.fade-in:nth-child(2) { transition-delay: 100ms; }
.fade-in:nth-child(3) { transition-delay: 200ms; }
.fade-in:nth-child(4) { transition-delay: 300ms; }
.fade-in:nth-child(5) { transition-delay: 400ms; }
.fade-in:nth-child(6) { transition-delay: 500ms; }