/* ==========================================================================
   Design System & Global Variables
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg: #F8FAFC;          /* Slate 50 */
    --color-surface: #FFFFFF;     /* White */
    --color-text-main: #0F172A;   /* Slate 900 */
    --color-text-muted: #475569;  /* Slate 600 */
    
    --color-primary: #4F46E5;     /* Indigo 600 */
    --color-primary-light: #818CF8; /* Indigo 400 */
    --color-primary-dark: #3730A3;  /* Indigo 800 */
    
    --color-accent: #0D9488;      /* Teal 600 */
    --color-accent-light: #2DD4BF; /* Teal 400 */
    --color-accent-glow: rgba(13, 148, 136, 0.15);
    
    --color-border: #E2E8F0;      /* Slate 200 */
    --color-border-hover: #CBD5E1; /* Slate 300 */
    
    /* Dark-Navy background for special sections/mockups */
    --color-dark-bg: #0B0F19;     /* Deep Space Navy */
    --color-dark-surface: #111827; /* Gray 900 */
    --color-dark-text: #F9FAFB;   /* Gray 50 */
    --color-dark-text-muted: #9CA3AF; /* Gray 400 */
    --color-dark-border: #1F2937;  /* Gray 800 */
    
    /* System Feedback Colors */
    --color-success: #10B981;     /* Emerald 500 */
    --color-success-bg: #ECFDF5;  /* Emerald 50 */
    --color-error: #EF4444;       /* Red 500 */
    --color-error-bg: #FEF2F2;    /* Red 50 */

    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Animation Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadow Systems */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.15);
    --shadow-input: inset 0 2px 4px 0 rgba(0, 0, 0, 0.02);
    
    /* Layout Configurations */
    --container-max-width: 1200px;
    --header-height: 80px;
    --header-height-scrolled: 70px;
}

/* ==========================================================================
   CSS Resets & Global Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

button {
    cursor: pointer;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border-hover);
    border-radius: 5px;
    border: 2px solid var(--color-bg);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ==========================================================================
   Utility Classes & Components
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: 7.5rem 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 5rem 0;
    }
}

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

.section-header {
    max-width: 650px;
    margin: 0 auto 4rem auto;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-text-main);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.875rem;
    }
    .section-subtitle {
        font-size: 1rem;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.975rem;
    transition: all var(--transition-normal);
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-surface);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text-main);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--color-bg);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* Gradients & tech card borders */
.border-gradient {
    position: relative;
    background: var(--color-dark-surface);
    border-radius: 12px;
    z-index: 1;
}

.border-gradient::before {
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    border-radius: 13px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    z-index: -1;
    pointer-events: none;
}

.border-gradient-hover {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.border-gradient-hover:hover {
    border-color: transparent;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transform: translateY(-5px);
}

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

.border-gradient-hover::before {
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

/* ==========================================================================
   Header / Navigation Bar
   ========================================================================== */
.navbar-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: height var(--transition-normal), background-color var(--transition-normal), border-bottom var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar-header.scrolled {
    height: var(--header-height-scrolled);
    background-color: rgba(248, 250, 252, 0.95);
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--color-border);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    letter-spacing: -0.03em;
}

.logo-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-right: 0.15rem;
}

.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

.btn-contact-nav {
    background-color: rgba(79, 70, 229, 0.06);
    color: var(--color-primary) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: 6px;
    transition: all var(--transition-fast) !important;
}

.btn-contact-nav:hover {
    background-color: var(--color-primary);
    color: var(--color-surface) !important;
}

.btn-contact-nav::after {
    display: none !important;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Language Switcher */
.lang-switch-container {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.lang-btn {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--color-text-main);
    background-color: rgba(0, 0, 0, 0.05);
}

.lang-btn.active {
    color: var(--color-primary);
    background-color: rgba(79, 70, 229, 0.08);
}

.lang-separator {
    color: var(--color-border);
    font-size: 0.875rem;
    user-select: none;
}

/* Hamburger menu button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    z-index: 1010;
}

.hamburger-bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

/* Active hamburger animation */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Responsive Navigation */
@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background-color: var(--color-surface);
        box-shadow: var(--shadow-xl);
        padding: 6rem 2rem 2rem 2rem;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        z-index: 999;
    }
    
    .nav-menu.open {
        transform: translateX(0);
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.75rem;
    }
    
    .nav-link {
        font-size: 1.15rem;
    }
    
    .btn-contact-nav {
        width: 100%;
        text-align: center;
    }
}

/* ==========================================================================
   Hero Section Styling
   ========================================================================== */
.hero-section {
    position: relative;
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 6rem;
    min-height: 95vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

@media (max-width: 768px) {
    .hero-section {
        padding-top: calc(var(--header-height) + 2rem);
        padding-bottom: 4rem;
        min-height: auto;
    }
}

/* Background accents */
.hero-bg-accent-1 {
    position: absolute;
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, rgba(255,255,255,0) 70%);
    pointer-events: none;
    z-index: -1;
}

.hero-bg-accent-2 {
    position: absolute;
    bottom: -5%;
    left: -5%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.06) 0%, rgba(255,255,255,0) 70%);
    pointer-events: none;
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
}

.hero-content {
    max-width: 680px;
}

@media (max-width: 1024px) {
    .hero-content {
        margin: 0 auto;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--color-text-main);
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
    .hero-subtitle {
        font-size: 1.05rem;
        margin-bottom: 2rem;
    }
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

@media (max-width: 1024px) {
    .hero-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn {
        width: 100%;
    }
}

/* Hero Visual & Tech Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
}

.tech-card-wrapper {
    position: relative;
    width: 100%;
    max-width: 450px;
}

.tech-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.tech-card-header {
    background-color: #1E293B;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-dark-border);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
    display: inline-block;
}

.dot.red { background-color: #EF4444; }
.dot.yellow { background-color: #F59E0B; }
.dot.green { background-color: #10B981; }

.card-title-text {
    color: #94A3B8;
    font-family: monospace;
    font-size: 0.75rem;
    margin-left: auto;
}

.tech-card-body {
    padding: 1.5rem;
    font-family: monospace;
    font-size: 0.825rem;
    line-height: 1.5;
    background-color: var(--color-dark-bg);
    color: #E2E8F0;
    text-align: left;
    overflow-x: auto;
}

/* Syntax Highlighting */
.keyword { color: #F472B6; }
.class-name { color: #60A5FA; }
.function { color: #34D399; }
.string { color: #FBBF24; }

/* Floating Widgets */
.floating-widget {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(226, 232, 240, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
    z-index: 2;
}

.widget-1 {
    top: -20px;
    right: -20px;
}

.widget-2 {
    bottom: -20px;
    left: -20px;
    animation-delay: -3s;
}

@media (max-width: 480px) {
    .widget-1 {
        right: 0px;
    }
    .widget-2 {
        left: 0px;
    }
}

.widget-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(79, 70, 229, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.widget-2 .widget-icon {
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-accent);
}

.widget-icon svg {
    width: 16px;
    height: 16px;
}

.widget-details {
    display: flex;
    flex-direction: column;
}

.widget-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.widget-status {
    font-size: 0.825rem;
    font-weight: 700;
    color: var(--color-primary);
}

.text-success {
    color: var(--color-accent) !important;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Scroll indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.arrow-down-icon {
    width: 24px;
    height: 24px;
    color: var(--color-text-muted);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
    40% { transform: translate(-50%, -10px); }
    60% { transform: translate(-50%, -5px); }
}

/* ==========================================================================
   Services Section Styling
   ========================================================================== */
.services-section {
    background-color: var(--color-surface);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.service-card {
    padding: 3rem;
    border-radius: 12px;
    z-index: 1;
}

@media (max-width: 480px) {
    .service-card {
        padding: 2rem 1.5rem;
    }
}

.service-icon-container {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(13, 148, 136, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 2rem;
    transition: transform var(--transition-normal);
}

.service-card:hover .service-icon-container {
    transform: scale(1.1) rotate(5deg);
    color: var(--color-accent);
}

.service-icon {
    width: 28px;
    height: 28px;
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.service-description {
    color: var(--color-text-muted);
    font-size: 0.975rem;
    line-height: 1.6;
}

/* ==========================================================================
   About Section Styling
   ========================================================================== */
.about-section {
    background-color: var(--color-bg);
}

.about-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 5rem;
    align-items: center;
}

@media (max-width: 1024px) {
    .about-container {
        grid-template-columns: 1fr;
        gap: 3.5rem;
    }
}

.about-image-wrapper {
    display: flex;
    justify-content: center;
    position: relative;
}

.profile-frame {
    position: relative;
    width: 100%;
    max-width: 340px;
    aspect-ratio: 1;
}

.profile-bg-gradient {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 100%;
    height: 100%;
    border-radius: 40px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    opacity: 0.2;
    z-index: 1;
}

.avatar-tech-display {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.avatar-svg {
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.06));
}

.about-content {
    max-width: 620px;
}

.about-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.35rem 0.85rem;
    border-radius: 100px;
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.about-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.about-headline {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.about-text {
    color: var(--color-text-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.about-text:last-of-type {
    margin-bottom: 2.5rem;
}

.about-stats {
    display: flex;
    align-items: center;
    gap: 3rem;
}

@media (max-width: 480px) {
    .about-stats {
        gap: 1.5rem;
        flex-wrap: wrap;
    }
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Why Me Section Styling
   ========================================================================== */
.why-me-section {
    background-color: var(--color-surface);
}

.why-me-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

@media (max-width: 992px) {
    .why-me-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.why-card {
    background-color: var(--color-bg);
    padding: 3rem 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.why-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background-color: rgba(79, 70, 229, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.75rem;
}

.v-icon {
    width: 22px;
    height: 22px;
}

.why-card-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.why-card-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   Contact Section Styling
   ========================================================================== */
.contact-section {
    background-color: var(--color-bg);
    position: relative;
}

.contact-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 5rem;
    align-items: flex-start;
}

@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

.contact-info-panel {
    max-width: 500px;
}

@media (max-width: 992px) {
    .contact-info-panel {
        max-width: 100%;
    }
}

.contact-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.contact-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
}

.contact-divider {
    height: 1px;
    background-color: var(--color-border);
    margin-bottom: 2.5rem;
}

.contact-direct-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.contact-direct-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.contact-details-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal);
}

.contact-details-item:hover {
    border-color: var(--color-primary-light);
}

.details-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background-color: rgba(79, 70, 229, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mail-icon {
    width: 20px;
    height: 20px;
}

.details-text-group {
    display: flex;
    flex-direction: column;
}

.details-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.details-link {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
}

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

/* Contact Form Panel */
.contact-form-panel {
    background-color: var(--color-surface);
    padding: 3.5rem;
}

@media (max-width: 576px) {
    .contact-form-panel {
        padding: 2rem 1.5rem;
    }
}

.form-panel-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.form-group {
    margin-bottom: 1.75rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.875rem 1rem;
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text-main);
    box-shadow: var(--shadow-input);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94A3B8;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    background-color: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Error States */
.form-group.has-error input,
.form-group.has-error textarea {
    border-color: var(--color-error);
    background-color: var(--color-error-bg);
}

.form-group.has-error input:focus,
.form-group.has-error textarea:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.field-error-message {
    color: var(--color-error);
    font-size: 0.75rem;
    margin-top: 0.35rem;
    font-weight: 500;
    display: none;
}

.form-group.has-error .field-error-message {
    display: block;
}

/* Submit Button & Spinner */
.btn-submit {
    width: 100%;
    margin-top: 0.75rem;
    position: relative;
}

.btn-submit:disabled {
    background-color: var(--color-primary-light);
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #FFFFFF;
    animation: spin 0.8s linear infinite;
    display: none;
}

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

.btn-submit.loading .btn-text {
    opacity: 0.3;
}

.btn-submit.loading .spinner {
    display: block;
    position: absolute;
}

/* ==========================================================================
   Footer Styling
   ========================================================================== */
.footer-section {
    background-color: var(--color-dark-bg);
    color: var(--color-dark-text);
    padding: 6rem 0 0 0;
    border-top: 1px solid var(--color-dark-border);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 4rem;
    padding-bottom: 4rem;
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.footer-info {
    max-width: 320px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--color-dark-text);
}

.footer-desc {
    color: var(--color-dark-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.footer-nav a {
    color: var(--color-dark-text-muted);
    font-size: 0.9rem;
}

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

.footer-email-link {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary-light);
    display: inline-block;
    margin-bottom: 2rem;
}

.footer-email-link:hover {
    color: var(--color-accent-light);
}

.footer-lang-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-lang-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-dark-text-muted);
    font-weight: 600;
}

.footer-lang-btns {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.footer-lang-btn {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--color-dark-text-muted);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.footer-lang-btn:hover {
    color: var(--color-dark-text);
    background-color: rgba(255, 255, 255, 0.05);
}

.footer-lang-btn.active {
    color: var(--color-primary-light);
    background-color: rgba(129, 140, 248, 0.1);
}

.footer-bottom {
    border-top: 1px solid var(--color-dark-border);
    padding: 2rem 0;
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-dark-text-muted);
}

/* ==========================================================================
   Floating elements & Toast System
   ========================================================================== */
.back-to-top {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast), border-color var(--transition-fast);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-surface);
    box-shadow: var(--shadow-lg), 0 4px 10px rgba(79, 70, 229, 0.2);
}

.chevron-up-icon {
    width: 20px;
    height: 20px;
}

/* Toast System styling */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1100;
    max-width: 420px;
}

@media (max-width: 576px) {
    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        max-width: calc(100% - 2rem);
    }
}

.toast-message {
    background-color: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    animation: toast-slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast-message.success {
    border-left-color: var(--color-success);
}

.toast-message.error {
    border-left-color: var(--color-error);
}

.toast-title-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text-main);
}

.toast-msg-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.toast-message.fade-out {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */
.reveal-slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-slide-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Base animations for initial load */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-up {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    animation: fadeInRight 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-up:nth-child(1) { animation-delay: 0.1s; }
.animate-slide-up:nth-child(2) { animation-delay: 0.3s; }
.animate-slide-up:nth-child(3) { animation-delay: 0.5s; }

@keyframes fadeIn {
    to { opacity: 1; }
}

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

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

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal-slide-up {
        opacity: 1 !important;
        transform: none !important;
    }
}