/* --- VDH Brand Colors & Reset --- */
:root {
    /* Brand Colors based on VDH Logo */
    --bg-main: #1a237e; /* Royal Blue */
    --bg-secondary: #0d1245; /* Darker Navy */

    --text-primary: #ffffff;
    --text-secondary: #b0b8d8;

    --accent-color: #ef5350; /* VDH Orange/Red */
    --accent-gradient: linear-gradient(135deg, #ef5350, #ff8a65);

    --nav-height: 80px;
    --border-radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

/* --- Utility Classes --- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 25px; }
.section-padding { padding: 100px 0; }
.bg-darker { background-color: var(--bg-secondary); }
.center-text { text-align: center; }

/* Typography */
h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 20px; }
h2 { font-size: 1.8rem; color: var(--accent-color); font-weight: 600; margin-bottom: 20px; }
h3.section-title { font-size: 2.2rem; margin-bottom: 60px; position: relative; display: inline-block; }
h3.section-title::after {
    content: ''; position: absolute; width: 50%; height: 5px;
    background: var(--accent-color); bottom: -15px; left: 0;
}
.center-text h3.section-title::after { left: 25%; }
p { color: var(--text-secondary); margin-bottom: 20px; font-size: 1.05rem; }

.gradient-text {
    background: linear-gradient(to right, #ffffff, #9fa8da);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Navigation --- */
.navbar {
    height: var(--nav-height);
    background: rgba(13, 18, 69, 0.95);
    backdrop-filter: blur(10px);
    position: fixed; width: 100%; top: 0; z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex; align-items: center;
}
.nav-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }

/* Logo Styling */
.logo-text {
    font-size: 1.8rem;
    font-weight: 900;
    color: white;
    letter-spacing: -1px;
}
.accent-slash { color: var(--accent-color); font-weight: 400; font-style: italic; padding: 0 5px;}

.nav-links { list-style: none; display: flex; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--text-secondary); font-weight: 500; transition: 0.3s; }
.nav-links a:hover { color: white; }
.btn-highlight {
    border: 2px solid var(--accent-color);
    color: var(--accent-color) !important;
    padding: 8px 20px;
    border-radius: var(--border-radius);
}
.btn-highlight:hover { background: var(--accent-color); color: white !important; }
.hamburger { display: none; cursor: pointer; font-size: 1.5rem; color: white; }

/* --- Hero --- */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding-top: var(--nav-height);
    background: radial-gradient(circle at 80% 20%, rgba(239, 83, 80, 0.15), transparent 40%);
}
.greeting { color: var(--accent-color); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 15px; display: block; }

/* Buttons */
.btn { display: inline-block; padding: 14px 32px; border-radius: var(--border-radius); text-decoration: none; font-weight: 600; transition: 0.3s; margin-right: 15px; }
.btn-primary { background: var(--accent-color); color: white; box-shadow: 0 4px 15px rgba(239, 83, 80, 0.4); }
.btn-primary:hover { transform: translateY(-3px); background: #e53935; }
.btn-secondary { background: transparent; border: 1px solid rgba(255,255,255,0.3); color: white; }
.btn-secondary:hover { border-color: white; background: rgba(255,255,255,0.05); }

/* --- About --- */
.about-container { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 60px; align-items: center; }
.about-image-wrapper { position: relative; }
.about-image { width: 100%; border-radius: var(--border-radius); position: relative; z-index: 2; box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
.image-accent {
    position: absolute; top: -15px; left: -15px; width: 100%; height: 100%;
    border: 3px solid var(--accent-color); border-radius: var(--border-radius); z-index: 1;
}
.stats-grid { display: flex; gap: 40px; margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; }
.stat-box h3 { font-size: 2rem; color: var(--text-primary); margin-bottom: 0; }
.stat-box p { font-size: 0.9rem; margin-bottom: 0; }

/* --- Timeline (Experience) --- */
.timeline { border-left: 2px solid rgba(255,255,255,0.1); margin-left: 20px; padding: 20px 0; }
.timeline-item { position: relative; padding-left: 40px; margin-bottom: 50px; }
.timeline-item::before {
    content: ''; position: absolute; left: -9px; top: 5px; width: 16px; height: 16px;
    background: var(--accent-color); border-radius: 50%; border: 4px solid var(--bg-secondary);
}
.date { font-size: 0.85rem; color: var(--accent-color); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.timeline-content h4 { font-size: 1.4rem; color: white; margin: 5px 0; }
.company { color: #9fa8da; font-weight: 500; margin-bottom: 10px; }

/* --- Skills --- */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 50px; }
.skill-category h4 { margin-bottom: 25px; color: white; display: flex; align-items: center; gap: 10px; }
.skill-category h4 i { color: var(--accent-color); }
.skill-info { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 0.95rem; font-weight: 500; }
.progress-bar { height: 6px; background: rgba(255,255,255,0.1); border-radius: 10px; overflow: hidden; }
.progress { height: 100%; background: var(--accent-color); border-radius: 10px; }

/* --- Projects --- */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.project-card {
    background: var(--bg-main); padding: 35px; border-radius: var(--border-radius);
    border: 1px solid rgba(255,255,255,0.05); transition: 0.3s; position: relative;
    display: flex; flex-direction: column; justify-content: space-between;
}
.project-card:hover { transform: translateY(-5px); border-color: var(--accent-color); }
.icon-header { font-size: 2rem; color: var(--accent-color); margin-bottom: 20px; }
.tech-stack { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.tech-stack span { font-size: 0.8rem; background: rgba(255,255,255,0.05); padding: 5px 12px; border-radius: 20px; color: #b0b8d8; }

/* --- Contact --- */
.contact-cards { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-top: 40px; }
.contact-card {
    background: var(--bg-secondary); padding: 25px 40px; border-radius: var(--border-radius);
    text-decoration: none; color: white; display: flex; align-items: center; gap: 15px;
    border: 1px solid rgba(255,255,255,0.05); transition: 0.3s;
}
.contact-card:hover { border-color: var(--accent-color); background: rgba(239, 83, 80, 0.1); }
.contact-card i { font-size: 1.2rem; color: var(--accent-color); }

footer { padding: 40px; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); margin-top: 80px; font-size: 0.9rem; }

/* --- Mobile --- */
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links {
        position: fixed; top: var(--nav-height); right: -100%;
        background: var(--bg-secondary); height: calc(100vh - var(--nav-height));
        width: 80%; flex-direction: column; align-items: center; justify-content: center;
        transition: 0.4s; border-left: 1px solid rgba(255,255,255,0.1);
    }
    .nav-links.active { right: 0; }
    h1 { font-size: 2.5rem; }
    .about-container { grid-template-columns: 1fr; }
    .timeline { margin-left: 0; }
    .hero-btns { display: flex; flex-direction: column; gap: 15px; }
    .btn { margin-right: 0; text-align: center;}
}