/* ============================================
   MERAE - Digital Solutions Studio
   Core Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Primary Colors - Teal Palette */
    --color-primary: #008080;
    --color-primary-dark: #006666;
    --color-primary-light: #20B2AA;
    --color-primary-lighter: #40E0D0;
    --color-primary-pale: #E0F7F5;
    --color-primary-muted: #5FABA6;
    
    /* Accent Colors */
    --color-accent-coral: #E07A5F;
    --color-accent-coral-light: #F2A285;
    --color-accent-blue: #4A90A4;
    --color-accent-purple: #7B68A6;
    --color-accent-gold: #D4A853;
    
    /* Neutrals */
    --color-white: #FFFFFF;
    --color-off-white: #FAFBFC;
    --color-gray-100: #F5F7F8;
    --color-gray-200: #E8ECEF;
    --color-gray-300: #D1D9DE;
    --color-gray-400: #9BA8B0;
    --color-gray-500: #6B7A85;
    --color-gray-600: #4A5660;
    --color-gray-700: #2D3640;
    --color-gray-800: #1A2028;
    --color-dark: #0F1419;
    
    /* Text Colors */
    --text-primary: #1A2028;
    --text-secondary: #4A5660;
    --text-tertiary: #6B7A85;
    --text-muted: #9BA8B0;
    --text-light: #FFFFFF;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F7F8;
    --bg-tertiary: #E8ECEF;
    --bg-teal-soft: #F0FAFA;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    --text-8xl: 6rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Layout */
    --container-max: 1400px;
    --container-narrow: 900px;
    --header-height: 90px;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(0, 128, 128, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slowest: 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Easing */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ============================================
   Custom Cursor
   ============================================ */
.cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease, background 0.3s ease;
    mix-blend-mode: difference;
}

.cursor-follower {
    position: fixed;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, border-color 0.3s ease;
    opacity: 0.5;
}

.cursor.hover {
    width: 60px;
    height: 60px;
    background: transparent;
    border: 2px solid var(--color-primary);
    mix-blend-mode: normal;
}

.cursor-follower.hover {
    width: 80px;
    height: 80px;
    opacity: 0.3;
}

@media (max-width: 1024px) {
    .cursor, .cursor-follower {
        display: none;
    }
}

/* ============================================
   Scroll Progress
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    z-index: 10001;
    transition: width 0.1s linear;
}

/* ============================================
   Container
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-12);
    }
}

/* ============================================
   Typography Utilities
   ============================================ */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-light {
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary-pale) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-slow);
}

.header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .header-container {
        padding: 0 var(--space-12);
    }
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    z-index: 1001;
}

.logo-img {
    height: 100px;
    width: auto;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.logo-text {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    transition: color var(--transition-base);
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: transform var(--transition-base);
}

.logo:hover .logo-dot {
    transform: scale(1.3);
}

/* Navigation */
.nav-main {
    display: none;
    align-items: center;
    gap: var(--space-10);
}

@media (min-width: 1024px) {
    .nav-main {
        display: flex;
    }
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    position: relative;
    padding: var(--space-2) 0;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-slow);
}

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

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

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.btn-contact {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary);
    color: var(--text-light);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

@media (min-width: 768px) {
    .btn-contact {
        display: flex;
    }
}

.btn-contact svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.btn-contact:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-contact:hover svg {
    transform: translateX(4px);
}

/* Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px;
    height: 32px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(5.5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-5.5px);
}

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
}

/* ============================================
   Full Screen Menu Overlay
   ============================================ */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slower);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.menu-content {
    text-align: center;
    transform: translateY(40px);
    opacity: 0;
    transition: all var(--transition-slower) 0.2s;
}

.menu-overlay.active .menu-content {
    transform: translateY(0);
    opacity: 1;
}

.menu-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-16);
}

.menu-link {
    font-size: var(--text-5xl);
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    transition: color var(--transition-base);
}

.menu-link::before {
    content: attr(data-index);
    position: absolute;
    left: -60px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--text-muted);
    opacity: 0;
    transition: all var(--transition-base);
}

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

.menu-link:hover::before {
    opacity: 1;
    left: -50px;
}

.menu-footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.menu-social {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
}

.menu-social a {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.menu-social a:hover {
    color: var(--color-primary);
}

.menu-email {
    font-size: var(--text-lg);
    color: var(--color-primary);
    font-weight: 500;
}

/* ============================================
   Buttons
   ============================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background: var(--color-primary);
    color: var(--text-light);
    font-size: var(--text-base);
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-full);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slower);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 128, 128, 0.3);
}

.btn-primary .btn-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transition: transform var(--transition-base);
}

.btn-primary .btn-icon svg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
}

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

.btn-primary.btn-large {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
}

.btn-primary.btn-light {
    background: var(--color-white);
    color: var(--color-primary);
}

.btn-primary.btn-light:hover {
    background: var(--color-off-white);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background: transparent;
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.02em;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-slow);
}

.btn-outline svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-outline:hover svg {
    transform: translateX(4px);
}

.btn-text {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-base);
    position: relative;
}

.btn-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-slow);
}

.btn-text:hover {
    color: var(--color-primary);
}

.btn-text:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ============================================
   Section Styling
   ============================================ */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-4);
}

.section-label::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 700;
    line-height: 1.15;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-header {
    margin-bottom: var(--space-16);
}

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

.section-header-center .section-label::before {
    display: none;
}

.section-header-split {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .section-header-split {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-end;
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    padding: var(--space-20) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: var(--space-8);
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.footer-logo .logo-img {
    height: 60px;
    width: auto;
}

.footer-logo .logo-text {
    font-size: var(--text-xl);
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-gray-300);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-nav h4,
.footer-contact h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
}

.footer-nav nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-nav a {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

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

.footer-email {
    display: block;
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    transition: opacity var(--transition-base);
}

.footer-email:hover {
    opacity: 0.8;
}

.footer-address {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    transition: color var(--transition-base);
}

.footer-legal a:hover {
    color: var(--color-primary);
}

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    background-size: 200% 200%;
    animation: gradientShift 6s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s ease, transform 0.8s ease;
    overflow: hidden;
}

.loading-screen::before,
.loading-screen::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.08);
}

.loading-screen::before {
    width: 400px;
    height: 400px;
    animation: waveExpand 2s ease-out infinite;
}

.loading-screen::after {
    width: 400px;
    height: 400px;
    animation: waveExpand 2s ease-out infinite 1.5s;
}

.loading-screen.loaded {
    opacity: 0;
    visibility: hidden;
    transform: scale(1.1);
}

.loading-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.loading-logo {
    position: relative;
    animation: logoEntrance 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
    opacity: 0;
}

.loading-logo::before,
.loading-logo::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    pointer-events: none;
}

.loading-logo::before {
    width: 280px;
    height: 280px;
    animation: waveExpand 2s ease-out infinite;
}

.loading-logo::after {
    width: 280px;
    height: 280px;
    animation: waveExpand 2s ease-out infinite 1s;
}

.loading-logo-img {
    height: 240px;
    width: auto;
    filter: brightness(0) invert(1) drop-shadow(0 10px 40px rgba(0, 0, 0, 0.3));
    animation: logoBreath 2s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

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

@keyframes waveExpand {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.2;
    }
    50% {
        opacity: 0.1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.8);
        opacity: 0;
    }
}

@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: scale(0.3) rotate(-10deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes logoBreath {
    0%, 100% { 
        transform: scale(1);
        filter: brightness(0) invert(1) drop-shadow(0 10px 40px rgba(0, 0, 0, 0.3));
    }
    50% { 
        transform: scale(1.05);
        filter: brightness(0) invert(1) drop-shadow(0 20px 60px rgba(0, 0, 0, 0.5));
    }
}

/* ============================================
   Magnetic Effect Base (JS Enhancement)
   ============================================ */
.magnetic {
    position: relative;
}

/* ============================================
   Responsive Utilities
   ============================================ */
@media (max-width: 767px) {
    :root {
        --header-height: 70px;
    }
    
    .menu-link {
        font-size: var(--text-3xl);
    }
}