/**
 * VivexIA - Main Stylesheet
 * 
 * Organized following CSS best practices:
 * 1. CSS Variables (Custom Properties)
 * 2. Base/Reset Styles
 * 3. Typography
 * 4. Layout Components
 * 5. UI Components
 * 6. Animations
 * 7. Utilities
 * 8. Media Queries
 * 
 * @author VivexIA Team
 * @version 1.0.0
 */

/* ==========================================================================
   1. CSS VARIABLES (Custom Properties)
   ========================================================================== */
:root {
    /* Brand Colors */
    --color-primary: #1e3a5f;
    --color-accent: #1d6c96;
    --color-secondary: #2b8fbe;
    --color-accent-light: #3ba3d0;

    /* Neutral Colors */
    --color-dark: #0f172a;
    --color-light: #f8fafc;
    --color-light-secondary: #f1f5f9;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-400: #94a3b8;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;

    /* Typography */
    --font-title: 'Poppins', sans-serif;
    --font-body: 'Poppins', sans-serif;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-accent: 0 10px 40px rgba(29, 108, 150, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-smooth: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-progress: 9999;
}

/* ==========================================================================
   2. BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   3. LOGO STYLES - Best Practices
   ========================================================================== */

/* Logo container with clear space */
.logo-container {
    display: flex;
    align-items: center;
    padding: 4px 0;
    transition: all var(--transition-normal);
}

/* Logo hover effect - subtle scale */
.logo-container:hover {
    transform: scale(1.02);
}

/* Logo image base styles */
.logo-img {
    height: 60px;
    width: auto;
    transition: all var(--transition-normal);
}

.logo-container:hover .logo-img {
    filter: drop-shadow(0 4px 12px rgba(29, 108, 150, 0.3));
}

@media (min-width: 768px) {
    .logo-img {
        height: 84px;
    }
}

/* Hero logo - larger, prominent display */
.hero-logo {
    height: 80px;
    width: auto;
    filter: drop-shadow(0 10px 30px rgba(29, 108, 150, 0.2));
    animation: logoFloat 3s ease-in-out infinite;
}

@media (min-width: 768px) {
    .hero-logo {
        height: 120px;
    }
}

/* Logo pulse glow effect */
.logo-glow {
    animation: logoGlow 2s ease-in-out infinite;
}

/* ==========================================================================
   4. HEADER & NAVIGATION
   ========================================================================== */

/* Glass Header Effect - Light Mode */
.glass-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 58, 95, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

/* Navigation Link Animations */
.nav-link {
    position: relative;
    transition: all var(--transition-normal);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -6px;
    left: 0;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    transition: width var(--transition-normal);
    border-radius: 2px;
}

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

.nav-link:hover {
    color: var(--color-primary);
}

/* Mobile Menu Animation */
.mobile-menu-enter {
    animation: slideDown 0.3s ease forwards;
}

/* Hamburger Animation */
.hamburger-line {
    transition: all var(--transition-normal);
}

.hamburger-active .line-1 {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-active .line-2 {
    opacity: 0;
}

.hamburger-active .line-3 {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ==========================================================================
   5. UI COMPONENTS
   ========================================================================== */

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Card Hover Effects */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(29, 108, 150, 0.15);
}

/* Gradient Border */
.gradient-border {
    position: relative;
}

.gradient-border::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-secondary));
    border-radius: 2px;
}

/* Glassmorphism Cards - Light Mode */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(30, 58, 95, 0.1);
}

/* Light Card Styles */
.card-light {
    background: white;
    border: 1px solid rgba(30, 58, 95, 0.1);
    box-shadow: var(--shadow-md);
}

.card-light:hover {
    box-shadow: 0 10px 40px rgba(29, 108, 150, 0.15);
}

/* Light Hero Section */
.hero-light {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
}

/* Image Zoom on Hover */
.img-zoom {
    overflow: hidden;
}

.img-zoom img {
    transition: transform 0.6s ease;
}

.img-zoom:hover img {
    transform: scale(1.1);
}

/* Magnetic effect for buttons */
.magnetic-btn {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   6. SMOOTH SCROLL & LENIS
   ========================================================================== */

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary), var(--color-accent-light));
    z-index: var(--z-progress);
    transition: width 0.1s ease-out;
}

/* Smooth scroll body - for Lenis */
html.lenis,
html.lenis body {
    height: auto;
}

.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
    overscroll-behavior: contain;
}

.lenis.lenis-stopped {
    overflow: hidden;
}

.lenis.lenis-scrolling iframe {
    pointer-events: none;
}

/* Smoothed anchor scroll offset for fixed header */
section[id] {
    scroll-margin-top: 100px;
}

/* ==========================================================================
   7. ANIMATIONS
   ========================================================================== */

/* Logo Float Animation */
@keyframes logoFloat {

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

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

/* Logo Glow Animation */
@keyframes logoGlow {

    0%,
    100% {
        filter: drop-shadow(0 0 20px rgba(29, 108, 150, 0.3));
    }

    50% {
        filter: drop-shadow(0 0 40px rgba(29, 108, 150, 0.6));
    }
}

/* Scroll Indicator Animation */
@keyframes scroll-indicator {

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

    50% {
        transform: translateY(10px);
        opacity: 0.5;
    }
}

.scroll-animate {
    animation: scroll-indicator 2s infinite;
}

/* Slide Down Animation */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

/* Float Animation */
@keyframes float {

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

    50% {
        transform: translateY(-20px);
    }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Pulse Glow Animation */
@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
    }

    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.8);
    }
}

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

/* ==========================================================================
   8. REVEAL ANIMATIONS (Scroll-triggered)
   ========================================================================== */

/* Reveal from bottom */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all var(--transition-smooth);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reveal from left */
.reveal-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: all var(--transition-smooth);
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Reveal from right */
.reveal-right {
    opacity: 0;
    transform: translateX(60px);
    transition: all var(--transition-smooth);
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Reveal scale */
.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all var(--transition-smooth);
}

.reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* Blur reveal effect */
.blur-reveal {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(30px);
    transition: all var(--transition-smooth);
}

.blur-reveal.revealed {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

/* Fade in animation */
.fade-in {
    opacity: 0;
    transition: opacity 1s ease-out;
}

.fade-in.revealed {
    opacity: 1;
}

/* Stagger animation delays */
.stagger-1 {
    transition-delay: 0.1s;
}

.stagger-2 {
    transition-delay: 0.2s;
}

.stagger-3 {
    transition-delay: 0.3s;
}

.stagger-4 {
    transition-delay: 0.4s;
}

.stagger-5 {
    transition-delay: 0.5s;
}

.stagger-6 {
    transition-delay: 0.6s;
}

/* Parallax containers */
.parallax-container {
    overflow: hidden;
    position: relative;
}

.parallax-bg {
    position: absolute;
    inset: -20%;
    will-change: transform;
}

/* Text reveal animation */
.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.text-reveal.revealed span {
    transform: translateY(0);
    opacity: 1;
}

/* Section divider animation */
.section-divider {
    width: 0;
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-divider.revealed {
    width: 100%;
}

/* Image reveal mask */
.image-reveal {
    position: relative;
    overflow: hidden;
}

.image-reveal::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    transform: translateX(-101%);
    transition: transform var(--transition-smooth);
}

.image-reveal.revealing::after {
    transform: translateX(0);
}

.image-reveal.revealed::after {
    transform: translateX(101%);
}

/* Scroll indicator hide on scroll */
.scroll-indicator-container {
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-indicator-container.hidden {
    opacity: 0;
    transform: translate(-50%, 20px);
    pointer-events: none;
}

/* Counter animation */
.counter {
    transition: all var(--transition-normal);
}

/* ==========================================================================
   9. ACCESSIBILITY
   ========================================================================== */

/* Respect reduced motion preferences */
@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;
    }

    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale,
    .blur-reveal,
    .fade-in {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    z-index: 100;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}