/* =========================================================
   ROTNIVKA — STYLE.CSS
   Material Identity Research
========================================================= */

/* IMPORTS */
@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=Inter:wght@400;700;900&display=swap');

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

html {
    scroll-behavior: smooth;
}

:root {
    --surface-silver: #C0C0C0; /* Tu paleta exacta */
    --ink-asphalt: #1A1A1A;
    --accent-red: #340001;
    --font-display: 'Archivo Black', sans-serif;
    --font-main: 'Inter', sans-serif;
}

body {
    font-family: var(--font-main);
    background-color: var(--surface-silver);
    color: var(--ink-asphalt);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.02em;
}

/* TYPOGRAPHY */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.04em;
    line-height: 1.05;
}

p {
    font-size: 1rem;
    color: var(--ink-asphalt);
    font-weight: 400;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* LAYOUT CONTAINER */
main {
    width: min(1300px, 92%); /* Ampliado para dar más aire minimalista a las pantallas grandes */
    margin: 0 auto;
}

/* NAVBAR (STYLISH & MINIMAL) */
header {
    position: sticky;
    top: 0;
    background: rgba(192, 192, 192, 0.85); /* Silver con blur */
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(26, 26, 26, 0.15);
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px; /* Un poco más alto para verse más premium */
    width: min(1300px, 92%);
    margin: 0 auto;
}

/* Forzar que el logo mantenga el impacto bruto en una sola línea */
.logo {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(1.1rem, 2vw, 1.8rem);
    text-transform: uppercase;
    letter-spacing: -0.04em;
}

.navbar ul {
    display: flex;
    gap: 2.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.navbar a:hover {
    color: var(--accent-red);
}

/* HERO SECTION (EDITORIAL SPLIT DESIGN) */
.hero {
    padding: 140px 0 100px;
    border-bottom: 1px solid rgba(26, 26, 26, 0.15);
}

.hero .eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-red);
    letter-spacing: 0.08em;
    margin-bottom: 25px;
}

/* El gran H1 que domina la parte superior */
.hero h1 {
    font-size: clamp(2.2rem, 6vw, 5.5rem);
    margin-bottom: 35px;
    max-width: 1100px;
}

.hero-text {
    max-width: 750px;
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    line-height: 1.4;
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* BUTTONS (EDGY & DISRUPTIVE BLACK PLATES) */
.button {
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 14px 32px;
    background: var(--ink-asphalt);
    color: var(--surface-silver);
    border: 1px solid var(--ink-asphalt);
    display: inline-block;
    transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.button:hover {
    background: var(--accent-red);
    color: #FFFFFF;
    border-color: var(--accent-red);
}

.secondary {
    background: transparent;
    color: var(--ink-asphalt);
    border: 1px solid var(--ink-asphalt);
}

.secondary:hover {
    background: var(--ink-asphalt);
    color: var(--surface-silver);
    border-color: var(--ink-asphalt);
}

/* SECTIONS GRID GENERICS */
section {
    padding: 120px 0;
    border-bottom: 1px solid rgba(26, 26, 26, 0.15);
}

.section-label {
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--accent-red);
    letter-spacing: 0.08em;
    margin-bottom: 35px;
}

/* MANIFESTO */
.manifesto h2 {
    font-size: clamp(1.6rem, 4vw, 3.2rem);
    line-height: 1.1;
    margin-bottom: 30px;
    max-width: 950px;
}

.manifesto p {
    max-width: 800px;
    font-size: 1.1rem;
    line-height: 1.5;
}

/* TOPICS GRID (CLEAN ASYMMETRICAL VIBE) */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* No usamos cajas separadoras pesadas ni fondos blancos tradicionales */
.topic {
    padding: 30px 0;
    border: none;
    border-top: 1px solid var(--ink-asphalt);
    background: transparent;
}

.topic h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    letter-spacing: -0.03em;
}

.topic p {
    font-size: 0.95rem;
    line-height: 1.4;
    opacity: 0.85;
}

/* CARDS (PORTFOLIO/SYSTEM INTERFACES) */
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.card {
    border: none;
    border-top: 2px solid var(--ink-asphalt);
    padding: 30px 0 10px 0;
    background: transparent;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    font-size: 1.8rem;
    margin: 15px 0;
}

.status {
    margin-top: 20px;
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--accent-red);
    letter-spacing: 0.05em;
}

/* NEWSLETTER */
.newsletter {
    text-align: left;
}

.newsletter form {
    margin-top: 30px;
    display: flex;
    gap: 0; /* Unimos el input y el botón en un solo bloque monolítico */
    max-width: 600px;
}

input {
    flex: 1;
    padding: 16px;
    border: 2px solid var(--ink-asphalt);
    background: transparent;
    color: var(--ink-asphalt);
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
}

input::placeholder {
    color: rgba(26, 26, 26, 0.4);
}

input:focus {
    outline: none;
    background: rgba(255,255,255,0.1);
}

button {
    padding: 16px 32px;
    border: none;
    background: var(--ink-asphalt);
    color: var(--surface-silver);
    font-family: var(--font-main);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: 0.2s ease;
}

button:hover {
    background: var(--accent-red);
    color: #FFFFFF;
}

/* CONTACT PREVIEW */
.contact-preview {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
}

.contact-preview h2 {
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    max-width: 700px;
}

/* EXTENDED FOOTER SYSTEM */
footer {
    border-top: 2px solid var(--ink-asphalt);
    padding: 80px 0 40px;
    margin-top: 100px;
}

.footer-grid {
    width: min(1300px, 92%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-grid h3,
.footer-grid h4 {
    font-size: 0.8rem;
    font-family: var(--font-main);
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.footer-grid ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-grid p,
.footer-grid a {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2vw, 1.8rem);
    text-transform: uppercase;
    line-height: 1.1;
    letter-spacing: -0.03em;
    opacity: 1;
}

.footer-grid a:hover {
    color: var(--accent-red);
}

/* Estricto cumplimiento del requerimiento de copyright e identidades */
.footer-bottom {
    width: min(1300px, 92%);
    margin: 80px auto 0;
    padding-top: 30px;
    border-top: 1px solid rgba(26, 26, 26, 0.15);
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    opacity: 1;
}

/* RESPONSIVE LAYOUT TRANSLATIONS */
@media (max-width: 992px) {
    .topics-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cards {
        grid-template-columns: 1fr 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .navbar {
        height: 75px;
    }
}

@media (max-width: 768px) {
    .cards {
        grid-template-columns: 1fr;
    }

    .contact-preview {
        flex-direction: column;
        align-items: flex-start;
        gap: 30px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
        margin-top: 50px;
    }
    
    .newsletter form {
        flex-direction: column;
    }
    
    button {
        width: 100%;
    }
}

@media (max-width: 600px) {
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar ul {
        gap: 1rem;
    }
}