/* ==========================================================================
   BASE.CSS
   Estilos globales: variables, reset, navbar y footer.
   Se usa en base.html y por lo tanto está presente en TODAS las páginas
   que extienden base.html (boleta, dashboard, index, mi_cuenta,
   mis_libros, prestamo, register, search, usuarios).
   login.html y 404.html son standalone y NO cargan este archivo
   (tienen su propio :root en login.css y error-404.css).
   ========================================================================== */

:root {
    --primary-color: #601818;
    --primary-light: #8e2b2b;
    --primary-dark: #2d0e0e;
    --primary-rgba: rgba(96, 24, 24, 0.08);

    --accent-color: #dfb23f;
    --accent-hover: #f1c754;
    --accent-light: #faf3e0;

    --bg-color: #faf8f5;
    --card-bg: #ffffff;
    --text-main: #2b1d1d;
    --text-muted: #726262;
    --text-light: #fdfaf7;

    --border-color: #eaded5;
    --focus-ring: rgba(223, 178, 63, 0.4);

    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    --font-serif: 'Montserrat', sans-serif;
    --font-sans: 'Montserrat', sans-serif;

    --shadow-sm: 0 4px 6px -1px rgba(96, 24, 24, 0.05), 0 2px 4px -1px rgba(96, 24, 24, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(96, 24, 24, 0.08), 0 4px 6px -2px rgba(96, 24, 24, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(96, 24, 24, 0.1), 0 10px 10px -5px rgba(96, 24, 24, 0.04);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-pill: 9999px;

    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
    width: 100%;
}

/* ==========================================================================
   NAVBAR (fondo blanco, limpio — logo y texto en tono guinda/oscuro)
   ========================================================================== */
.navbar {
    background: var(--card-bg);
    padding: 0.7rem 2rem;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-serif);
}

.nav-logo {
    height: 46px;
    width: auto;
    object-fit: contain;
    filter: none;
    transition: var(--transition-smooth);
}

.nav-brand:hover .nav-logo {
    transform: scale(1.08) rotate(-3deg);
}

.brand-text {
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    color: var(--primary-color);
    letter-spacing: 0.3px;
}

/* ==========================================================================
   GRUPO DE MARCA Y BUSCADOR EXPANDIBLE (NAVBAR)
   ========================================================================== */
.nav-brand-group {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    position: relative;
}

.nav-search-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

/* Botón de la lupa con diseño circular elegante */
.nav-search-toggle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background: #ffffff;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
    padding: 0;
}

.nav-search-toggle svg {
    width: 18px;
    height: 18px;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-search-toggle:hover {
    background: var(--accent-light, #faf3e0);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: scale(1.08);
}

.nav-search-wrapper.is-open .nav-search-toggle {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(96, 24, 24, 0.2);
}

.nav-search-wrapper.is-open .nav-search-toggle svg {
    transform: rotate(90deg);
}

/* Barra de búsqueda blanca que se extiende de forma animada a la derecha */
.nav-search-box {
    display: flex;
    align-items: center;
    background: #ffffff;
    border: 1.5px solid transparent;
    border-radius: var(--radius-pill);
    box-shadow: none;
    overflow: hidden;
    width: 0;
    opacity: 0;
    pointer-events: none;
    margin-left: 0;
    padding: 0;
    transition: width 0.4s cubic-bezier(0.34, 1.3, 0.64, 1),
                opacity 0.25s ease,
                margin-left 0.35s ease,
                border-color 0.3s ease,
                box-shadow 0.3s ease;
    white-space: nowrap;
}

/* Estado abierto con animación suave hacia la derecha */
.nav-search-wrapper.is-open .nav-search-box {
    width: 340px;
    opacity: 1;
    pointer-events: auto;
    margin-left: 0.6rem;
    border-color: var(--primary-color);
    box-shadow: 0 4px 18px rgba(96, 24, 24, 0.12);
}

.nav-search-input {
    border: none;
    background: transparent;
    outline: none;
    padding: 0.55rem 0.6rem 0.55rem 1.1rem;
    font-size: 0.92rem;
    font-family: inherit;
    color: var(--text-main);
    width: 100%;
    min-width: 0;
}

.nav-search-input::placeholder {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.nav-search-submit {
    background: none;
    border: none;
    color: var(--primary-color);
    padding: 0 0.5rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.nav-search-submit svg {
    width: 16px;
    height: 16px;
}

.nav-search-submit:hover {
    color: var(--accent-color);
    transform: scale(1.15);
}

.nav-search-close {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0 0.9rem 0 0.2rem;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}

.nav-search-close:hover {
    color: var(--primary-color);
    transform: scale(1.2);
}

/* Responsividad para pantallas medianas y móviles */
@media (max-width: 992px) {
    .nav-search-wrapper.is-open .nav-search-box {
        width: 250px;
    }
}

@media (max-width: 768px) {
    .nav-brand-group {
        gap: 0.5rem;
    }
    .brand-text {
        font-size: 1.25rem;
    }
    .nav-search-wrapper.is-open .nav-search-box {
        width: 180px;
    }
    .nav-search-input {
        padding: 0.45rem 0.4rem 0.45rem 0.8rem;
        font-size: 0.85rem;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

.nav-menu a:hover {
    color: var(--primary-color);
    background: var(--primary-rgba);
}

.nav-menu a:hover::after {
    width: 80%;
}

.nav-menu li a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* ==========================================================================
   FOOTER (INSTITUCIONAL POZA RICA - 3 COLUMNAS)
   ========================================================================== */
.main-footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #150606 100%);
    color: var(--text-light);
    padding: 4rem 2rem 2.2rem;
    border-top: 3px solid var(--accent-color);
    position: relative;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(234, 222, 213, 0.1);
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.footer-logo {
    height: 64px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    align-self: flex-start;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #c9b9b1;
}

.footer-section h4 {
    font-family: var(--font-serif);
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 0.6rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.footer-section ul a {
    color: #ebdcd5;
    text-decoration: none;
    font-size: 0.92rem;
    transition: var(--transition-smooth);
    display: inline-block;
}

.footer-section ul a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-section p {
    font-size: 0.9rem;
    color: #ebdcd5;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.5;
}

.contact-section svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--accent-color);
}

.contact-section a {
    color: #ebdcd5;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.contact-section a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    text-align: center;
    font-size: 0.88rem;
    color: #c9b9b1;
}

/* ==========================================================================
   TOAST (notificaciones, compartido por las páginas que extienden base.html)
   ========================================================================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 500;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
    transform: translateX(120%);
    transition: transform 0.3s ease;
    min-width: 280px;
}

.toast.show {
    transform: translateX(0);
}

.toast-success { border-left: 4px solid var(--success); }
.toast-success i { color: var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-error i { color: var(--danger); }

/* ==========================================================================
   ANIMACIONES (compartidas por todas las páginas)
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==========================================================================
   RESPONSIVE (navbar / footer, aplica en toda la app)
   ========================================================================== */
@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .navbar {
        padding: 1.2rem 1rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}