/* ==========================================================================
   CSS VARIABLES
   ========================================================================== */
:root {
    /* Colors */
    --dark: #020617;
    --darker: #01050f;
    --blue: #1e3a8a;
    --sky: #0ea5e9;
    --electric: #00f2fe;
    --neon: #00ffea;
    --white: #ffffff;
    --light: #f8fafc;
    --gray: #94a3b8;
    --dark-gray: #475569;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--blue), var(--sky), var(--electric));
    --gradient-dark: linear-gradient(135deg, #01050f, var(--dark));
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    
    /* Glass Effects */
    --glass: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 32px rgba(14, 165, 233, 0.15);
    --shadow-lg: 0 20px 60px rgba(14, 165, 233, 0.25);
    --shadow-neon: 0 0 20px rgba(0, 242, 254, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 50%;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
}

/* Dark theme variables */
[data-theme="dark"] {
    --background: var(--dark);
    --text: var(--light);
    --surface: rgba(255, 255, 255, 0.05);
}

/* Light theme variables */
[data-theme="light"] {
    --background: var(--light);
    --text: var(--dark);
    --surface: rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--gradient-dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--transition-normal);
}

body.light-theme {
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    color: var(--dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ==========================================================================
   LOADER
   ========================================================================== */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--darker);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-content {
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.logo-loader {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
}

.logo-loader svg {
    width: 100%;
    height: 100%;
    animation: rotate 3s linear infinite;
}

.logo-path {
    stroke-dasharray: 240;
    stroke-dashoffset: 240;
    animation: drawPath 2s ease-in-out infinite alternate;
}

.logo-circle {
    stroke-dasharray: 125;
    stroke-dashoffset: 125;
    animation: drawCircle 2s ease-in-out infinite alternate;
}

.loader-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--sky);
    letter-spacing: 1px;
}

.loading-dots::after {
    content: '';
    animation: dots 1.5s infinite;
}

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes drawCircle {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60% { content: '...'; }
    80%, 100% { content: ''; }
}

/* ==========================================================================
   ANIMATED BACKGROUND
   ========================================================================== */
.bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    animation: float 20s infinite linear;
    opacity: 0.1;
}

.particle:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: -5s;
    opacity: 0.05;
}

.particle:nth-child(3) {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: -10s;
}

.particle:nth-child(4) {
    width: 120px;
    height: 120px;
    top: 30%;
    right: 20%;
    animation-delay: -15s;
    opacity: 0.07;
}

.particle:nth-child(5) {
    width: 200px;
    height: 200px;
    bottom: 10%;
    right: 5%;
    animation-delay: -20s;
    opacity: 0.03;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-100px) rotate(90deg);
    }
    50% {
        transform: translateY(0) rotate(180deg);
    }
    75% {
        transform: translateY(100px) rotate(270deg);
    }
}

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.top-bar {
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.5rem 0;
    font-size: 0.9rem;
    position: relative;
    z-index: 1000;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.top-bar-left span,
.top-bar-right span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray);
    transition: color var(--transition-fast);
}

.top-bar-left i,
.top-bar-right i {
    color: var(--sky);
    font-size: 0.9rem;
}

.top-email {
    color: var(--gray);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.top-email:hover {
    color: var(--sky);
}

.social-top {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.social-top a {
    color: var(--gray);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
}

.social-top a:hover {
    color: var(--sky);
    background: rgba(14, 165, 233, 0.1);
    transform: translateY(-2px);
}

/* ==========================================================================
   MAIN HEADER
   ========================================================================== */
#main-header {
    background: rgba(2, 6, 23, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 999;
    transition: all var(--transition-normal);
}

#main-header.scrolled {
    padding: 0.5rem 0;
    background: rgba(2, 6, 23, 0.98);
    box-shadow: var(--shadow-md);
}

#main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem var(--space-md);
}

/* Logo Styles */
.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: transform var(--transition-normal);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: var(--shadow-neon);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-main {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--white), var(--sky));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-point {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--electric), var(--neon));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-tagline {
    font-size: 0.75rem;
    color: var(--gray);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding-left: 0.5rem;
    border-left: 2px solid var(--sky);
}

/* Desktop Navigation */
.desktop-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

.nav-link:hover {
    color: var(--sky);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--sky);
    background: rgba(14, 165, 233, 0.1);
}

.nav-link i {
    font-size: 1rem;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: rgba(2, 6, 23, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--light);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
    background: rgba(14, 165, 233, 0.1);
    color: var(--sky);
    padding-left: 2rem;
}

.dropdown-menu a i {
    width: 20px;
    text-align: center;
}

.dropdown-arrow {
    font-size: 0.8rem;
    transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-contact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--sky), var(--electric));
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: rotate(30deg);
}

.theme-toggle i:last-child {
    display: none;
}

body.light-theme .theme-toggle i:first-child {
    display: none;
}

body.light-theme .theme-toggle i:last-child {
    display: block;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background: var(--light);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ==========================================================================
   MOBILE NAVIGATION
   ========================================================================== */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: rgba(2, 6, 23, 0.98);
    backdrop-filter: blur(30px);
    border-left: 1px solid var(--glass-border);
    z-index: 1001;
    transition: right var(--transition-slow);
    overflow-y: auto;
}

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

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.mobile-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--light);
}

.mobile-logo .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 1rem;
}

.mobile-close {
    background: transparent;
    border: none;
    color: var(--light);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.mobile-close:hover {
    color: var(--sky);
}

.mobile-nav-content {
    padding: 2rem 1.5rem;
}

.mobile-user {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-greeting {
    font-weight: 600;
    color: var(--light);
}

.user-login {
    font-size: 0.9rem;
    color: var(--sky);
    text-decoration: none;
    margin-top: 0.25rem;
}

.mobile-menu {
    list-style: none;
    margin-bottom: 2rem;
}

.mobile-menu li {
    margin-bottom: 0.5rem;
}

.mobile-menu a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    color: var(--light);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-menu a:hover,
.mobile-menu a.active {
    background: rgba(14, 165, 233, 0.1);
    color: var(--sky);
}

.mobile-menu a i {
    width: 20px;
    text-align: center;
}

.mobile-menu a .fa-chevron-down {
    margin-left: auto;
    transition: transform var(--transition-fast);
}

.mobile-dropdown.active a .fa-chevron-down {
    transform: rotate(180deg);
}

.mobile-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    padding-left: 2rem;
}

.mobile-dropdown.active .mobile-submenu {
    max-height: 300px;
}

.mobile-submenu a {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
}

.mobile-contact {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--gray);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-item i {
    color: var(--sky);
    width: 20px;
}

.mobile-social {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 1rem;
}

.mobile-social a {
    color: var(--light);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.mobile-social a:hover {
    color: var(--sky);
    transform: translateY(-3px);
}

/* ==========================================================================
   SCROLL PROGRESS
   ========================================================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 1002;
    transition: width 0.1s ease;
}

/* ==========================================================================
   FLOATING ACTION BUTTON
   ========================================================================== */
.fab-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 990;
}

.fab-main {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.fab-main:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-neon);
}

.fab-main i {
    transition: transform var(--transition-normal);
}

.fab-container.active .fab-main i {
    transform: rotate(45deg);
}

.fab-actions {
    position: absolute;
    bottom: 70px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}

.fab-container.active .fab-actions {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.fab-action {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.fab-action:hover {
    background: rgba(14, 165, 233, 0.2);
    color: var(--sky);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
    
    .btn-contact span {
        display: none;
    }
    
    .btn-contact {
        padding: 0.75rem;
        border-radius: var(--radius-full);
    }
}

@media (max-width: 768px) {
    /* Hide desktop elements on mobile */
    .top-bar-right .social-top,
    .desktop-nav,
    .logo-tagline {
        display: none;
    }
    
    /* Show mobile menu toggle */
    .menu-toggle {
        display: flex;
    }
    
    /* Adjust header padding */
    #main-header .container {
        padding: 1rem var(--space-md);
    }
    
    /* Stack top bar items */
    .top-bar .container {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .top-bar-left,
    .top-bar-right {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    /* Adjust logo size */
    .logo-main,
    .logo-point {
        font-size: 1.5rem;
    }
    
    /* Adjust FAB position */
    .fab-container {
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .mobile-nav {
        width: 100%;
    }
    
    .logo-text {
        flex-direction: row;
        gap: 0.25rem;
    }
    
    .logo-main,
    .logo-point {
        font-size: 1.3rem;
    }
    
    .logo-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
.hidden {
    display: none !important;
}

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

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */
@media print {
    .fab-container,
    .mobile-nav,
    .theme-toggle,
    .menu-toggle,
    .top-bar {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}