:root {
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --card: rgba(30, 41, 59, 0.7);
    --text: #f8fafc;
    --text-secondary: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ===== RESET BASE ===== */

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

html {
    scroll-behavior: smooth;
}

body {
    background: linear-gradient(180deg, #020617 0%, var(--bg) 100%);
    color: var(--text);
    font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* ===== TIPOGRAFÍA ===== */

section {
    padding: 90px 0;
}

h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    margin-bottom: 25px;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== NAVBAR ===== */

.navbar {
    backdrop-filter: blur(16px);
    background: rgba(2, 6, 23, 0.75);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.navbar-brand {
    color: var(--text);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
    transition: 0.2s;
}

.navbar-brand:hover {
    color: var(--primary);
}

.nav-link {
    color: var(--text-secondary) !important;
    transition: 0.25s ease;
}

.nav-link:hover {
    color: var(--primary) !important;
    transform: translateY(-1px);
}

/* ===== HERO ===== */

header {
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
}

header .container {
    max-width: 850px;
}

header p:first-child {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
}

header h1 {
    font-size: clamp(2.5rem, 7vw, 4.8rem);
    margin: 20px 0;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

/* ===== BOTONES ===== */

.btn-dark {
    background: var(--primary);
    border: none;
    padding: 12px 28px;
    border-radius: 12px;
    transition: 0.25s ease;
}

.btn-dark:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.btn-outline-dark {
    color: var(--text);
    border: 1px solid var(--primary);
    border-radius: 12px;
}

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

/* ===== CARDS ===== */

.tech-card,
.project-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.tech-card:hover,
.project-card:hover {
    transform: translateY(-10px);
    border-color: rgba(59, 130, 246, 0.5);
}

/* ===== TECNOLOGÍAS ===== */

.tech-card {
    padding: 28px;
    text-align: center;
}

.tech-card i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.tech-name {
    font-size: 1rem;
    font-weight: 600;
}

/* ===== PROYECTOS ===== */

.project-card {
    overflow: hidden;
    height: 100%;
}

.project-image {
    padding: 25px;
    background: rgba(255, 255, 255, 0.03);
}

.project-image img {
    width: 100%;
    max-height: 180px;
    object-fit: contain;
    transition: 0.3s;
}

.project-card:hover img {
    transform: scale(1.03);
}

.project-body {
    padding: 25px;
}

.project-body h3 {
    margin-bottom: 12px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.project-tags span {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
}

/* ===== CONTACTO ===== */

form {
    max-width: 700px;
    margin: auto;
}

input,
textarea {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 14px;
    padding: 14px;
    margin-bottom: 16px;
    transition: 0.2s;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

textarea {
    min-height: 160px;
    resize: vertical;
}

/* BOTÓN CONTACTO */

#boton {
    width: 100%;
    background: var(--primary);
    border: none;
    font-weight: 600;
    padding: 14px;
    border-radius: 12px;
    transition: 0.25s ease;
}

#boton:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* ===== FOOTER ===== */

.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

/* ===== SCROLLBAR ===== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #020617;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}