/* Light Theme Architectural CSS for SLP Arquitectos */
@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url(fonts/roboto-condensed.woff2) format('woff2');
}

@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(fonts/roboto-condensed.woff2) format('woff2');
}

@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url(fonts/roboto-condensed.woff2) format('woff2');
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(fonts/open-sans.woff2) format('woff2');
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url(fonts/open-sans.woff2) format('woff2');
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url(fonts/open-sans.woff2) format('woff2');
}

:root {
    --font-display: 'Roboto Condensed', 'Arial Narrow', Arial, sans-serif;
    --font-body: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-secondary: #f1f5f9;
    --bg-header: rgba(241, 241, 241, 0.85);
    --bg-footer: #373737;
    --border-color: #e2e8f0;
    --border-on-dark: rgba(255, 255, 255, 0.12);
    --accent-gold: #c48b37;
    --accent-gold-hover: #b37a28;
    --accent-gold-light: rgba(196, 139, 55, 0.1);
    --accent-gold-bright: #e2a95c;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-on-dark: #e5e7eb;
    --text-on-dark-muted: #b0b3b8;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px -5px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px -10px rgba(0,0,0,0.12);
}

/* Page entry animations (shared keyframes) */
@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Disable entry animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-delay: 0ms !important;
        animation-iteration-count: 1 !important;
    }
}

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

html {
    scroll-behavior: smooth;
}

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

/* Navigation Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-mark {
    width: 42px;
    height: 42px;
    background: var(--accent-gold);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    color: #ffffff;
    font-size: 1.2rem;
    letter-spacing: -1px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--accent-gold);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
}

nav a:hover, nav a.active {
    color: var(--accent-gold);
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gold);
    border-radius: 2px;
}

.lang-selector {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.lang-selector .lang-link {
    padding: 0.15rem 0.4rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.85rem;
}

.lang-selector .lang-link::after {
    display: none;
}

.lang-selector .lang-link.active {
    background: var(--accent-gold-light);
    color: var(--accent-gold);
}

.lang-selector .lang-link:hover {
    color: var(--accent-gold);
}

/* Hamburger toggle (hidden on desktop) */
.nav-toggle,
.nav-toggle-btn {
    display: none;
}

/* Page Layout Wrappers */
.main-wrapper {
    padding-top: 6rem;
    min-height: 80vh;
}

/* Footer */
footer {
    background: var(--bg-footer);
    border-top: 1px solid var(--border-on-dark);
    padding: 5rem 2rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--text-on-dark);
    margin-top: 1rem;
    max-width: 400px;
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-on-dark);
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-on-dark);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--accent-gold-bright);
}

.subfooter {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-on-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-on-dark-muted);
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    /* Mobile navigation: collapse the header menu into a hamburger */
    nav {
        margin-left: auto;
        display: flex;
        align-items: center;
    }

    .lang-selector {
        width: 100%;
        justify-content: flex-start;
        border: 0;
        border-top: 1px solid var(--border-color);
        border-radius: 0;
        background: transparent;
        margin-top: 0.5rem;
        padding: 0.9rem 0;
    }

    .nav-toggle {
        position: absolute;
        width: 1px;
        height: 1px;
        opacity: 0;
        overflow: hidden;
    }

    .nav-toggle-btn {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        padding: 0.5rem;
        z-index: 1001;
    }

    .nav-toggle-btn span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--text-primary);
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    .nav-toggle:focus-visible + .nav-toggle-btn {
        outline: 2px solid var(--accent-gold);
        outline-offset: 2px;
        border-radius: 4px;
    }

    nav ul {
        display: none;
        position: fixed;
        top: 82px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        padding: 0.5rem 2rem 1rem;
        box-shadow: var(--shadow-md);
    }

    .nav-toggle:checked ~ ul {
        display: flex;
    }

    nav ul li a {
        display: block;
        padding: 0.9rem 0;
        font-size: 1rem;
    }

    .nav-toggle:checked + .nav-toggle-btn span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle:checked + .nav-toggle-btn span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle:checked + .nav-toggle-btn span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .subfooter {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}