/* ----------------------------------------------------
 * Style Definitions - Personal Portfolio
 * Mahmoud Ibrahim Ahmed Mohamed - Data Analyst
 * ---------------------------------------------------- */

/* --- Custom Variables & Theme tokens --- */
:root {
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Dark Mode (Default) */
    --bg-color: #0B1120;
    --surface-color: #111827;
    --card-color: #1F2937;
    --border-color: #374151;
    --primary-color: #6366F1;
    --primary-hover: #4F46E5;
    --secondary-accent: #10B981;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
    --glass-bg: rgba(17, 24, 39, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --gradient-glow: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(16, 185, 129, 0.05) 50%, transparent 100%);
    --gradient-bg: linear-gradient(135deg, #111827 0%, #0B1120 100%);
}

[data-theme="light"] {
    /* Light Mode */
    --bg-color: #FFFFFF;
    --surface-color: #F3F4F6;
    --card-color: #E5E7EB;
    --border-color: #D1D5DB;
    --primary-color: #6366F1;
    --primary-hover: #4F46E5;
    --secondary-accent: #14B8A6;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(99, 102, 241, 0.08);
    --shadow-lg: 0 10px 40px rgba(99, 102, 241, 0.12);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(0, 0, 0, 0.08);
    --gradient-glow: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(20, 184, 166, 0.03) 50%, transparent 100%);
    --gradient-bg: linear-gradient(135deg, #F9FAFB 0%, #FFFFFF 100%);
}

/* --- Global Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none; /* Hide default cursor to enable custom cursor */
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    transition: var(--transition-smooth);
    background-image: var(--gradient-bg);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* --- Utility Layouts & Typography --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

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

li {
    list-style: none;
}

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

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 9999px;
    margin-bottom: 1.5rem;
}

/* Grid overlay background effect */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(128, 128, 128, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(128, 128, 128, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 1;
}

/* Scroll Progress Bar */
#scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-accent));
    width: 0%;
    z-index: 9999;
}

/* --- Custom Cursor --- */
#custom-cursor {
    width: 32px;
    height: 32px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 99999;
    transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    opacity: 0;
}

#custom-cursor-dot {
    width: 6px;
    height: 6px;
    background-color: var(--secondary-accent);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 99999;
    opacity: 0;
}

/* Cursor scale on hover */
body.cursor-hover #custom-cursor {
    width: 48px;
    height: 48px;
    background-color: rgba(99, 102, 241, 0.1);
    border-color: var(--secondary-accent);
}

body.cursor-hover #custom-cursor-dot {
    background-color: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.5);
}

/* --- Sticky Floating Navbar --- */
.navbar-container {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    z-index: 900;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 9999px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 0.6rem 1.5rem;
    background: var(--surface-color);
}

.nav-logo {
    font-size: 1.4rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--primary-color);
    transition: var(--transition-smooth);
}

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

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

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.sun-icon {
    display: none;
    width: 20px;
    height: 20px;
}

.moon-icon {
    display: block;
    width: 20px;
    height: 20px;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
}

.mobile-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* --- Hero Section --- */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 6rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 10;
}

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

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeUp 1s ease forwards;
}

.typewriter-container {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.typewriter-text {
    color: var(--primary-color);
    background: linear-gradient(to right, var(--primary-color), var(--secondary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cursor-blink {
    font-weight: 400;
    color: var(--primary-color);
    animation: blink 0.8s infinite;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 9999px;
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #FFFFFF;
    border: none;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-3px);
}

.btn-whatsapp {
    background: rgba(37, 211, 102, 0.1);
    border: 1px solid rgba(37, 211, 102, 0.3);
    color: #25D366;
    border-radius: 14px !important;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.15);
    transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-whatsapp:hover {
    background: rgba(37, 211, 102, 0.25);
    border-color: #25D366;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.3);
    transform: translateY(-3px) scale(1.05) !important;
}

.btn-email {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 14px !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.btn-email:hover {
    background: var(--border-color);
    border-color: var(--primary-color);
    transform: translateY(-3px) scale(1.05) !important;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15);
}

/* Ripple Button Effect */
.ripple {
    position: absolute;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Quick social grid */
.hero-social-grid {
    display: flex;
    gap: 1rem;
}

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

.social-link-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.15);
}

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

/* Right Side: Photo Frame */
.hero-image-area {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-glow {
    position: absolute;
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 70%);
    z-index: 1;
    filter: blur(40px);
}

.hero-image-frame {
    position: relative;
    z-index: 2;
    width: 500px;
    height: 620px;
    max-width: 100%;
    border-radius: 24px;
    overflow: hidden;
    background: var(--glass-bg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 
                0 0 50px rgba(59, 130, 246, 0.15); /* Soft blue/indigo glow */
    animation: float 6s ease-in-out infinite;
    transition: transform 0.1s ease-out, box-shadow 0.3s;
    padding: 1.5px; /* For the thin animated gradient border */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Conic gradient border background */
.hero-image-frame::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        transparent, 
        var(--primary-color), 
        #3B82F6, 
        var(--secondary-accent), 
        transparent 60%
    );
    animation: rotate-border 6s linear infinite;
    z-index: -2;
}

/* Inner glass background masking the rotating gradient */
.hero-image-frame::after {
    content: '';
    position: absolute;
    inset: 1.5px;
    background: var(--glass-bg);
    border-radius: 22.5px;
    z-index: -1;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 22.5px;
    transition: var(--transition-smooth);
}

.hero-image-frame:hover .hero-img {
    transform: scale(1.05);
}

/* Scroll down indicator */
.scroll-down-arrow {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    animation: scrollBounce 2s infinite;
}

.scroll-down-arrow svg {
    stroke-width: 1.5;
}

/* --- About Section --- */
.about-section {
    padding: 8rem 0;
    position: relative;
    z-index: 10;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-tag {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--secondary-accent);
    margin-bottom: 0.5rem;
    display: block;
}

.section-title {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.title-underline {
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-accent));
    margin: 1rem auto 0;
    border-radius: 2px;
}

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

.about-image-container {
    position: relative;
}

.about-glow {
    position: absolute;
    width: 110%;
    height: 110%;
    top: -5%;
    left: -5%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    z-index: 1;
}

.about-img-frame {
    position: relative;
    z-index: 2;
    border-radius: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    aspect-ratio: 1;
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text-content {
    display: flex;
    flex-direction: column;
}

.about-bio {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-bio strong {
    color: var(--text-primary);
}

.about-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 2.5rem;
}

.about-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 1.2rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

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

.about-card-icon {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.about-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Statistics panel */
.about-stats-panel {
    display: flex;
    gap: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

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

.stat-number {
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1;
}

.stat-plus {
    color: var(--secondary-accent);
    font-size: 1.5rem;
    font-weight: 700;
    vertical-align: super;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Education Section --- */
.education-section {
    padding: 8rem 0;
    position: relative;
    z-index: 10;
}

.timeline-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-accent));
}

.timeline-item {
    display: flex;
    width: 100%;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-item.left-align {
    justify-content: flex-start;
}

.timeline-item.right-align {
    justify-content: flex-end;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 2rem;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--bg-color);
    border: 3px solid var(--primary-color);
    z-index: 10;
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--secondary-accent);
    border-color: var(--text-primary);
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 10px var(--secondary-accent);
}

.timeline-content {
    width: 45%;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
}

.timeline-item:hover .timeline-content {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary-accent);
}

.timeline-tag {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border-radius: 99px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.timeline-detail {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.timeline-gpa-pill {
    display: inline-block;
    padding: 0.35rem 0.8rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--secondary-accent);
    margin-bottom: 1rem;
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* --- Services Section --- */
.services-section {
    padding: 8rem 0;
    position: relative;
    z-index: 10;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.service-icon-bg {
    width: 60px;
    height: 60px;
    border-radius: 1rem;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon-bg {
    background: var(--primary-color);
    color: #FFFFFF;
    transform: rotate(5deg) scale(1.05);
}

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

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.service-short-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.service-features {
    width: 100%;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.service-features li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-features li::before {
    content: '✦';
    color: var(--secondary-accent);
    font-size: 0.75rem;
}

/* --- Contact Section --- */
.contact-section {
    padding: 8rem 0;
    position: relative;
    z-index: 10;
}

.contact-layout {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item-link {
    transition: var(--transition-smooth);
}

.info-item-link:hover {
    transform: translateX(5px);
}

.info-item {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 1.2rem 1.5rem;
    border-radius: 1.2rem;
    transition: var(--transition-smooth);
}

.info-item-link:hover .info-item {
    border-color: var(--secondary-accent);
}

.info-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-accent);
    flex-shrink: 0;
}

.info-icon svg {
    width: 22px;
    height: 22px;
}

.info-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.info-item p {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

/* Contact Form */
.contact-form-container {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input, .form-group textarea {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.8rem;
    padding: 0.8rem 1.2rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Input validation styling */
.form-group.invalid input, .form-group.invalid textarea {
    border-color: #EF4444;
    background: rgba(239, 68, 68, 0.02);
}

.form-group .error-msg {
    color: #EF4444;
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.25rem;
    display: none;
}

.form-group.invalid .error-msg {
    display: block;
}

.form-submit-btn {
    align-self: flex-start;
    border: none;
}

.send-icon {
    width: 18px;
    height: 18px;
    transition: var(--transition-smooth);
}

.form-submit-btn:hover .send-icon {
    transform: translate(3px, -3px);
}

/* Status Alert */
.status-alert {
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    border-radius: 0.8rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.status-alert.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #10B981;
}

.status-alert.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #EF4444;
}

.hidden {
    display: none;
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--border-color);
    background: var(--surface-color);
    padding: 4rem 0;
    position: relative;
    z-index: 10;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

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

.footer-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-social-links {
    display: flex;
    gap: 2rem;
}

.footer-social-links a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-smooth);
}

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

.footer-social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.footer-social-icon:hover {
    color: #25D366; /* Default hover to whatsapp color or primary */
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.15);
}

.footer-social-icon[title="WhatsApp"]:hover {
    color: #25D366;
    border-color: #25D366;
    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.2);
}

.footer-social-icon[title="Email"]:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.2);
}

.footer-social-icon[title="LinkedIn"]:hover {
    color: #0077B5;
    border-color: #0077B5;
}

.footer-social-icon[title="GitHub"]:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.footer-copyright {
    width: 100%;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Floating Contact Widget */
.floating-contact {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 800;
}

.floating-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition-bounce);
}

.floating-btn.whatsapp {
    background: #25D366;
}

.floating-btn.email {
    background: var(--primary-color);
}

.floating-btn:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.floating-btn svg {
    width: 22px;
    height: 22px;
    stroke: #FFFFFF;
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary-color);
    color: #FFFFFF;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 800;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-bounce);
}

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

.back-to-top:hover {
    background: var(--primary-hover);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 6px 15px rgba(99, 102, 241, 0.4);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* --- Animations & Reveal --- */
@keyframes rotate-border {
    100% {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

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

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Scroll reveal trigger properties */
.animate-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in {
    opacity: 0;
    animation: fadeInAnimation 1s ease forwards;
}

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

.hero-buttons.fade-in {
    animation-delay: 0.4s;
}

.hero-description.fade-in {
    animation-delay: 0.2s;
}

.hero-social-grid.fade-in {
    animation-delay: 0.6s;
}