/* ==========================================================================
   EDITORIAL PURUHÁ - HOJA DE ESTILOS DEDICADA: GUÍA DE MANUSCRITOS
   Archivo: css/formatos.css
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

/* --------------------------------------------------------------------------
   1. VARIABLES DE COLOR Y CONFIGURACIÓN BASE
   -------------------------------------------------------------------------- */
:root {
    --color-bg-rubio: #ede8d0;
    --color-text-black: #181818;
    --color-accent-red: #a82020;
    --color-white: #f6f4e8;
    --color-gray: #6b6b6b;
    --color-light-box: rgba(24, 24, 24, 0.03);

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;

    --transition-speed: 0.3s;
    --max-width-content: 820px;
    --header-height: 75px;
}

/* --------------------------------------------------------------------------
   2. RESETEO Y ESTILOS GENERALES
   -------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-rubio);
    color: var(--color-text-black);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    padding-top: var(--header-height);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: 1rem;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

ul {
    list-style: none;
}

/* --------------------------------------------------------------------------
   3. CABECERA Y NAVEGACIÓN FIJA
   -------------------------------------------------------------------------- */
header {
    background-color: var(--color-white);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: padding var(--transition-speed);
}

header.scrolled {
    padding: 0.6rem 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.nav-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-item>a {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.5rem 0;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background-color: var(--color-white);
    min-width: 220px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
    padding: 0.75rem 0;
    border-top: 2px solid var(--color-accent-red);
    border-radius: 0 0 6px 6px;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 0.6rem 1.5rem;
    font-size: 0.85rem;
}

.dropdown-menu li a:hover {
    background-color: rgba(168, 32, 32, 0.05);
    color: var(--color-accent-red);
    padding-left: 1.8rem;
}

.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.6rem;
}

/* --------------------------------------------------------------------------
   4. PANEL FLOTANTE DE BOTONES (ESQUINA INFERIOR DERECHA)
   -------------------------------------------------------------------------- */
.guide-floating-actions {
    position: fixed;
    bottom: 30px;
    left: calc(50% + 440px);
    right: auto;
    top: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1050;
    transition: bottom 0.1s linear;
}

.btn-guide-action {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.85rem 1.6rem;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    white-space: nowrap;
    transition: all var(--transition-speed) ease;
}

.btn-guide-action.btn-download {
    background-color: var(--color-accent-red);
    color: var(--color-white) !important;
    box-shadow: 0 4px 20px rgba(168, 32, 32, 0.3);
}

.btn-guide-action.btn-download:hover {
    background-color: var(--color-text-black);
    box-shadow: 0 4px 20px rgba(24, 24, 24, 0.35);
    transform: translateY(-2px);
}

.btn-guide-action.btn-authors {
    background-color: var(--color-text-black);
    color: var(--color-white) !important;
    box-shadow: 0 4px 20px rgba(24, 24, 24, 0.2);
}

.btn-guide-action.btn-authors:hover {
    background-color: var(--color-accent-red);
    box-shadow: 0 4px 20px rgba(168, 32, 32, 0.35);
    transform: translateY(-2px);
}

.btn-guide-action.btn-submit {
    background-color: var(--color-accent-red);
    color: var(--color-white) !important;
    border: 1px solid var(--color-accent-red);
    box-shadow: 0 4px 20px rgba(168, 32, 32, 0.3);
}

.btn-guide-action.btn-submit:hover {
    background-color: var(--color-text-black);
    border-color: var(--color-text-black);
    box-shadow: 0 4px 20px rgba(24, 24, 24, 0.35);
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   5. ESTRUCTURA Y TEXTOS DE LA GUÍA DE MANUSCRITOS
   -------------------------------------------------------------------------- */
.manuscript-guide-section {
    background-color: var(--color-white);
    padding: 30px 0 15px;
    border-top: 1px solid rgba(24, 24, 24, 0.05);
    position: relative;
    width: 100%;
}

.guide-container {
    max-width: var(--max-width-content) !important;
    margin: 0 auto !important;
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

.guide-main-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--color-text-black);
    text-align: center;
    margin-bottom: 0.8rem;
}

.guide-divider {
    width: 70px;
    height: 3px;
    background-color: var(--color-accent-red);
    margin: 0 auto 2.5rem;
}

.guide-intro {
    font-family: var(--font-body);
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--color-gray);
    text-align: justify;
    margin-bottom: 2.5rem;
}

.guide-tutorial-box {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    background-color: var(--color-bg-rubio);
    padding: 1.2rem 1.8rem;
    border-radius: 8px;
    border-left: 4px solid var(--color-accent-red);
    margin-bottom: 3.5rem;
}

.youtube-icon {
    font-size: 2.2rem;
    color: #ff0000;
}

.guide-tutorial-box p {
    font-size: 0.95rem;
    color: var(--color-text-black);
}

.guide-block {
    margin-bottom: 3.5rem;
}

.guide-block h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-text-black);
    border-bottom: 1px solid rgba(24, 24, 24, 0.08);
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
}

.guide-block p {
    font-size: 0.98rem;
    line-height: 1.8;
    color: var(--color-gray);
    margin-bottom: 1.2rem;
    text-align: justify;
}

.guide-subblock {
    margin-left: 1rem;
    margin-bottom: 2rem;
}

.guide-subblock h4 {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-accent-red);
    margin-bottom: 0.75rem;
}

.guide-list {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.guide-list li {
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--color-gray);
    margin-bottom: 0.8rem;
    list-style-type: square;
}

.guide-list li strong {
    color: var(--color-text-black);
}

.guide-equation-box {
    background-color: var(--color-light-box);
    border: 1px solid rgba(24, 24, 24, 0.05);
    padding: 1.5rem 2rem;
    border-radius: 6px;
    margin: 1.8rem 0;
}

/* --------------------------------------------------------------------------
   6. FOOTER PRINCIPAL E INTEGRADO (ACTUALIZADO CON COLORES DE INDEX.PHP)
   -------------------------------------------------------------------------- */
.main-footer {
    background-color: #0f2436;
    /* Azul profundo oficial extraído del logo de index.php */
    color: var(--color-bg-rubio, #ede8d0);
    padding: 40px 0 30px;
    border-top: 1px solid rgba(237, 232, 208, 0.1);
    font-family: var(--font-body);
    position: relative;
    z-index: 10;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 15px;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 0.8rem;
}

.footer-logo-img {
    height: 45px;
    width: auto;
}

.footer-tagline {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 0.95rem;
    color: var(--color-accent-gold, #b38e4a);
    margin-bottom: 0.8rem;
}

.footer-description {
    font-size: 0.88rem;
    line-height: 1.7;
    color: #a39b8e;
    margin-bottom: 1.5rem;
}

.footer-socials {
    display: flex;
    gap: 0.8rem;
}

.footer-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(237, 232, 208, 0.08);
    color: var(--color-white);
    font-size: 0.9rem;
    transition: all var(--transition-speed) ease;
}

.footer-socials a:hover {
    background-color: var(--color-accent-gold, #b38e4a);
    color: var(--color-accent-blue, #163650);
    transform: translateY(-3px);
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--color-accent-gold, #b38e4a);
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #a39b8e;
    font-size: 0.88rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-speed) ease;
}

.footer-links a i {
    font-size: 0.7rem;
    color: var(--color-accent-gold, #b38e4a);
    transition: transform var(--transition-speed) ease;
}

.footer-links a:hover {
    color: var(--color-white);
    padding-left: 5px;
}

.footer-contact-info li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: #a39b8e;
    font-size: 0.88rem;
    margin-bottom: 0.8rem;
}

.footer-contact-info i {
    color: var(--color-accent-gold, #b38e4a);
}

.footer-license {
    margin-top: 1.5rem;
    padding: 0.8rem 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    border-left: 3px solid var(--color-accent-gold, #b38e4a);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.78rem;
    color: #a39b8e;
}

.footer-license i {
    font-size: 1.1rem;
    color: var(--color-white);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(237, 232, 208, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.82rem;
    color: #8c8477;
}

.footer-bottom-links {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.footer-bottom-links a {
    color: #8c8477;
}

.footer-bottom-links a:hover {
    color: var(--color-white);
}