:root {
    --bg-dark: #0f0f0f;
    --bg-darker: #0a0a0a;
    --bg-lighter: #1a1a1a;
    --bg-brief: #141414;
    --bg-arg: #111111;
    --bg-black: #000000;
    --text-white: #ffffff;
    --text-gray-300: #d1d5db;
    --text-gray-400: #9ca3af;
    --text-gray-500: #6b7280;
    --text-gray-600: #4b5563;
    --line-color: #ffffff;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: "Roboto Mono", monospace;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.font-archive {
    font-family: "Archivo Black", sans-serif;
}

/* Divisores */
.b-bottom { border-bottom: 2px solid var(--line-color); }
.b-right { border-right: 2px solid var(--line-color); }
.b-all { border: 2px solid var(--line-color); }

/* Animaciones */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.delay-200 { transition-delay: 200ms; }

/* NAV */
.main-nav {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background-color: var(--bg-dark);
    z-index: 50;
}
.nav-logo {
    font-size: 1.125rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: -0.05em;
}
.nav-logo a {
    text-decoration: none;
    color: inherit;
}
.nav-links {
    display: flex;
    gap: 2rem;
    font-size: 10px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.nav-links span.hide-mobile {
    display: none;
}
@media (min-width: 768px) {
    .nav-links span.hide-mobile {
        display: block;
    }
}

/* HERO SECTION */
.hero-section {
    display: grid;
    grid-template-columns: 1fr;
    background-color: var(--bg-dark);
}
.hero-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 60vh;
}
.hero-subtitle {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    display: block;
    color: var(--text-gray-400);
}
.hero-title {
    font-size: 3rem;
    text-transform: uppercase;
    line-height: 0.8;
    letter-spacing: -0.05em;
}
.hero-desc {
    margin-top: 2rem;
    max-width: 36rem;
    font-size: 0.875rem;
    line-height: 1.25;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--text-gray-300);
}

.hero-sidebar {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 10px;
    font-weight: bold;
    text-transform: uppercase;
    background-color: var(--bg-lighter);
    gap: 2rem;
}
.hero-sidebar-item {
    display: flex;
    flex-direction: column;
}
.hero-sidebar-label {
    display: block;
    color: var(--text-gray-500);
    margin-bottom: 0.25rem;
}
.hero-button {
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}
.hero-button:hover {
    background-color: var(--text-white);
    color: var(--bg-black);
}

@media (min-width: 768px) {
    .hero-section {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-title {
        font-size: 4.5rem;
    }
    .hero-desc {
        font-size: 1rem;
    }
}
@media (min-width: 1024px) {
    .hero-section {
        grid-template-columns: repeat(4, 1fr);
    }
    .hero-content {
        grid-column: span 3 / span 3;
        padding: 3rem;
        border-right: 2px solid var(--line-color);
    }
    .hero-sidebar {
        grid-column: span 1 / span 1;
        padding: 1.5rem;
    }
    .hero-title {
        font-size: 10rem;
    }
}

/* GENERAL SECTIONS GRID */
.section-grid {
    display: grid;
    grid-template-columns: 1fr;
}
.section-sidebar {
    padding: 1.5rem;
}
.section-content {
    padding: 1.5rem;
}
.sticky-title {
    position: sticky;
    top: 4rem;
    height: fit-content;
}
.section-number {
    font-size: 2.25rem;
}
.section-title {
    font-size: 1.25rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-top: 0.5rem;
}

@media (min-width: 768px) {
    .section-grid {
        grid-template-columns: repeat(12, 1fr);
    }
    .section-sidebar {
        grid-column: span 4 / span 4;
        border-right: 2px solid var(--line-color);
        border-bottom: none;
    }
    .section-content {
        grid-column: span 8 / span 8;
    }
}
@media (min-width: 1024px) {
    .section-sidebar {
        padding: 3rem;
    }
    .section-content {
        padding: 3rem;
    }
}

/* BRIEFING SECTION */
.bg-briefing { background-color: var(--bg-brief); }
.brief-container {
    max-width: 48rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
.brief-grid-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
}
.brief-label {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--text-gray-500);
    margin-bottom: 1rem;
}
.brief-text {
    font-size: 0.875rem;
}
.brief-list {
    font-size: 0.875rem;
    list-style-type: disc;
    list-style-position: inside;
}
.brief-list li {
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .brief-grid-inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ORIGEN SECTION */
.bg-origen-side { background-color: var(--bg-dark); }
.bg-origen-main { background-color: var(--bg-darker); }
.origen-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.origen-text {
    max-width: 42rem;
    font-size: 1.125rem;
    line-height: 1.375;
    color: var(--text-gray-300);
}
.origen-img-wrapper {
    margin-top: 3rem;
}
.img-container {
    background: #1a1a1a;
    display: block;
    width: 100%;
    height: auto;
    border: 2px solid var(--line-color);
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.7s;
}
.img-container:hover {
    filter: grayscale(0%);
    opacity: 1;
}
.img-caption {
    font-size: 9px;
    margin-top: 1rem;
    display: block;
    font-weight: bold;
    color: var(--text-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* CONCEPCION SECTION */
.bg-concepcion { background-color: var(--bg-dark); }
.concepcion-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}
.concepcion-item {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.concepcion-label {
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--text-gray-500);
}
.concepcion-text {
    font-size: 0.875rem;
    line-height: 1.625;
    color: var(--text-gray-300);
}

@media (min-width: 1024px) {
    .concepcion-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ARGUMENTO SECTION */
.bg-argumento { background-color: var(--bg-arg); }
.argumento-content {
    display: flex;
    align-items: center;
    justify-content: center;
}
.argumento-box {
    padding: 2rem;
    max-width: 48rem;
    background-color: var(--bg-dark);
}
.argumento-quote {
    font-size: 1.875rem;
    text-transform: uppercase;
    line-height: 0.9;
    letter-spacing: -0.05em;
    margin-bottom: 2rem;
    color: var(--text-white);
}
.argumento-desc {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: bold;
    color: var(--text-gray-500);
}

@media (min-width: 768px) {
    .argumento-box {
        padding: 4rem;
    }
    .argumento-quote {
        font-size: 3rem;
    }
}

/* PROCESO SECTION */
.bg-proceso { background-color: var(--bg-darker); }
.proceso-sidebar {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.proceso-subtitle {
    font-size: 10px;
    margin-top: 1rem;
    text-transform: uppercase;
    color: var(--text-gray-400);
}
.proceso-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.proceso-img {
    width: 100%;
    max-width: 28rem;
    filter: grayscale(100%);
    box-shadow: 12px 12px 0px 0px rgba(255,255,255,0.1);
}
.proceso-img-caption {
    font-size: 9px;
    margin-top: 3rem;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 0.2em;
    color: var(--text-gray-600);
}

/* FINAL SECTION */
.bg-final { background-color: var(--bg-black); }
.final-sidebar {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 40vh;
}
.final-subtitle {
    font-size: 10px;
    margin-top: 1rem;
    color: var(--text-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: bold;
}
.final-content {
    background-color: var(--bg-dark);
    display: flex;
    justify-content: center;
}
.final-img {
    width: 100%;
    max-width: 56rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* FOOTER */
footer {
    padding: 3rem 0;
    margin-top: 5rem;
    border-top: 2px solid var(--line-color);
    background: #0d0d0d;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-gray-400);
}

.footer-socials {
    display: flex;
    gap: 1.5rem;
}

.footer-socials a {
    color: var(--text-gray-500);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-socials a:hover {
    color: var(--text-white);
    transform: scale(1.2);
}

.footer-socials svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}