:root {
    --primary-color: #0f172a;
    --secondary-color: #1e293b;
    --text-color: #f8fafc;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --font-main: 'Poppins', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

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

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    border-radius: 5px;
    font-weight: 600;
    border: none;
    cursor: pointer;
}

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

.section-padding {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

/* Header & Nav */
header {
    background-color: rgba(15, 23, 42, 0.8);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 0;
    background-color: rgba(15, 23, 42, 0.95);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    color: rgba(248, 250, 252, 0.8);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--text-color);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.ssl-btn {
    padding: 8px 22px !important;
    font-size: 0.85rem !important;
    border-radius: 50px !important;
    background: linear-gradient(135deg, var(--accent-color) 0%, #0ea5e9 100%);
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.2);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ssl-btn:hover {
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Nav */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary-color);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        transform: translateY(-200%);
        transition: var(--transition);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .section-title {
        font-size: 2rem;
    }
}

/* About Section Enhancements */
.about-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-image img {
    max-width: 400px;
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.about-image img:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(56, 189, 248, 0.2);
    border-color: var(--accent-color);
}

/* Portfolio Section Enhancements */
.project-card {
    background-color: var(--secondary-color);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(56, 189, 248, 0.3);
}

.project-img {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-img img {
    transform: scale(1.1);
}

.project-info {
    padding: 25px;
}

.project-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.project-info p {
    color: #cbd5e1;
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.view-project {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.view-project:hover {
    color: var(--text-hover);
}

.view-project i {
    transition: var(--transition);
}

.view-project:hover i {
    transform: translateX(5px);
}

/* Contact Form Enhancements */
.form-response {
    margin-top: 15px;
    padding: 12px;
    border-radius: 5px;
    font-size: 0.95rem;
    display: none;
    transition: var(--transition);
}

.form-response.success {
    display: block;
    background-color: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-response.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}