/* Modern White Interface */
:root {
    --bg-color: #ffffff;
    --bg-secondary: #fdfdfd;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --accent: #2563eb;
    --border-color: #f3f4f6;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
    --radius-lg: 16px;
    --radius-xl: 24px;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --nav-scrolled-bg: rgba(255, 255, 255, 0.95);
    --badge-bg: rgba(0, 0, 0, 0.5);
    --badge-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --input-text: #111827;
    --hero-overlay-start: rgba(255, 255, 255, 0.4);
    --hero-overlay-end: rgba(255, 255, 255, 0.7);
    --hero-text: #000000;
    --hero-text-secondary: #0f172a;
    --transition: all 0.3s ease;
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(15, 23, 42, 0.8);
    --nav-scrolled-bg: rgba(15, 23, 42, 0.95);
    --badge-bg: rgba(37, 99, 235, 0.2);
    --badge-text: #60a5fa;
    --input-bg: #1e293b;
    --input-border: #334155;
    --input-text: #f8fafc;
    --hero-overlay-start: rgba(15, 23, 42, 0.6);
    --hero-overlay-end: rgba(15, 23, 42, 0.85);
    --hero-text: #ffffff;
    --hero-text-secondary: rgba(255, 255, 255, 0.9);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 5%;
    background-color: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    z-index: 50;
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: var(--nav-scrolled-bg);
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.logo a {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo span {
    font-weight: 400;
    color: var(--text-secondary);
}

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

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
}

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

.lang-switcher button {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 20px;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.lang-switcher button::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.lang-switcher button:hover {
    color: var(--text-primary);
    background-color: var(--border-color);
    transform: translateY(-2px);
}

.lang-switcher button.active {
    background-color: var(--text-primary);
    color: var(--bg-color);
    transform: scale(1.05);
}

.lang-switcher button.active::after {
    width: 50%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 6rem;
    background-image: linear-gradient(var(--hero-overlay-start), var(--hero-overlay-end)), url('images/2.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.theme-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-btn:hover {
    background-color: var(--border-color);
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--badge-bg);
    color: var(--badge-text);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.15); /* Slight blue glow */
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--hero-text);
}

.hero p {
    font-size: 1.25rem;
    color: var(--hero-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background-color: #000;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    border-color: transparent;
}

/* Hero specific button overrides */
.hero .btn-primary {
    background-color: var(--hero-text);
    color: var(--bg-color);
}

.hero .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
}

.hero .btn-secondary {
    color: var(--hero-text);
    border-color: var(--hero-text);
}

.hero .btn-secondary:hover {
    background-color: var(--border-color);
    border-color: transparent;
    color: var(--text-primary);
}

/* Decor Shapes */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 1;
    opacity: 0.5;
}

.shape-1 {
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, #e0e7ff 0%, rgba(255,255,255,0) 70%);
    top: -10%;
    left: -10%;
}

.shape-2 {
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, #f3f4f6 0%, rgba(255,255,255,0) 70%);
    bottom: -20%;
    right: -10%;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-color);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-image {
    width: 100%;
    height: 300px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--border-color);
    transition: transform 0.4s ease;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0;
}

.project-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact {
    background-color: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background: var(--bg-color);
    padding: 4rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-content p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.contact-item {
    margin-bottom: 1.5rem;
}

.contact-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--text-secondary);
    font-size: 1rem;
}

.contact-item a:hover {
    color: var(--text-primary);
}

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

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

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border-radius: 12px;
    background-color: var(--input-bg);
    color: var(--input-text);
    border: 1px solid var(--input-border);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-primary);
    box-shadow: 0 0 0 1px var(--text-primary);
}

/* Footer */
footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

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

.footer-logo {
    font-size: 1.25rem;
    font-weight: 800;
}

.footer-logo span {
    font-weight: 400;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .flex-footer {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Modal Styling */
.modal {
    display: none; 
    position: fixed; 
    z-index: 100; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: hidden; 
    background-color: rgba(0,0,0,0.85);
    backdrop-filter: blur(15px);
    opacity: 0;
    transition: opacity 0.4s ease;
    flex-direction: column;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80vh;
    border-radius: var(--radius-lg);
    box-shadow: 0 0 40px rgba(0,0,0,0.5);
    transform: scale(0.7);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal.show .modal-content {
    animation: zoomInBounce 0.5s forwards cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #fff;
    padding: 15px 0;
    font-size: 1.5rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease 0.2s, transform 0.4s ease 0.2s; /* Delayed appearance */
}

.modal.show .modal-caption {
    opacity: 1;
    transform: translateY(0);
}

@keyframes zoomInBounce {
    0% { transform: scale(0.5); opacity: 0; }
    80% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
    z-index: 101;
}

.close-modal:hover,
.close-modal:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card {
    cursor: pointer;
}