/* ===== RESET & VARIABLES ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

ul, li {
    list-style: none;
    margin: 0;
    padding: 0;
}

:root {
    --white: #ffffff;
    --bg-light: #f4f7fb;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-700: #334155;
    --gray-900: #0f172a;

    /* Deep Royal Blue Theme */
    --primary: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --accent: #1e40af;
    --gradient: linear-gradient(135deg, #1e40af 0%, #0f172a 100%);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 50px rgba(29, 78, 216, 0.20);
    --shadow-hover: 0 24px 60px rgba(29, 78, 216, 0.28);

    --radius: 16px;
    --radius-sm: 8px;
    --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-light);
    color: var(--gray-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

/* ===== TYPOGRAPHY ===== */
.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(29, 78, 216, 0.1);
    padding: 0.3rem 1.2rem;
    border-radius: 100px;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.15;
    color: var(--gray-900);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-title .highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 560px;
    margin-bottom: 0.5rem;
}

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

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.7rem 1.8rem;
    border-radius: 100px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: transparent;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 8px 24px rgba(29, 78, 216, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(29, 78, 216, 0.42);
}

.btn-outline {
    border: 1.5px solid var(--gray-200);
    color: var(--gray-700);
    background: var(--white);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.btn-ghost {
    color: var(--gray-500);
}

.btn-ghost:hover {
    color: var(--primary);
}

.btn-resume {
    background: var(--gray-900);
    color: var(--white);
    border: none;
}

.btn-resume:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(29, 78, 216, 0.3);
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.2rem 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 0.7rem 0;
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.5px;
    text-decoration: none;
}

.logo span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2.2rem;
    align-items: center;
}

.nav-links a {
    color: var(--gray-500);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    text-decoration: none;
}

.nav-links a:hover {
    color: var(--gray-900);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 4px;
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--gray-900);
    font-weight: 600;
}

.nav-links .btn-nav {
    background: var(--gradient);
    color: var(--white);
    padding: 0.6rem 2rem;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.3);
    transition: var(--transition);
}

.nav-links .btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(29, 78, 216, 0.38);
}

.nav-links .btn-nav::after {
    display: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    border-radius: 4px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--white);
    padding: 2rem 0;
    border-top: 1px solid var(--gray-200);
    text-align: center;
    color: var(--gray-400);
    font-size: 0.85rem;
}

.footer span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.footer i {
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
}