/* ===================================
   FEFyM - Custom CSS
   Colores basados en el logo de FEFyM
   =================================== */

/* === VARIABLES === */
:root {
    /* Colores del logo FEFyM */
    --primary-blue: #0A5F8C;
    --primary-light-blue: #1E8AB8;
    --secondary-blue: #2B9FCC;
    --accent-teal: #4CB5D9;
    --light-blue: #A8D8E8;
    
    /* Tonos de gris profesionales */
    --gray-dark: #2C3E50;
    --gray-medium: #7F8C8D;
    --gray-light: #ECF0F1;
    --gray-lighter: #F8F9FA;
    
    /* Colores de estado */
    --success: #27AE60;
    --warning: #F39C12;
    --danger: #E74C3C;
    --info: #3498DB;
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Merriweather', Georgia, serif;
    --font-navbar: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Espaciado */
    --section-padding: 5rem 0;
    --card-radius: 12px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: var(--font-primary);
    color: var(--gray-dark);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

/* === Improved readability for older users === */
p {
    line-height: 1.8;
    letter-spacing: 0.2px;
}

.lead {
    font-size: 1.3rem;
    line-height: 1.8;
}

.fs-5 {
    font-size: 1.1rem !important;
    line-height: 1.8 !important;
}

/* === OVERRIDE BOOTSTRAP COLORS === */
.bg-primary {
    background-color: var(--primary-blue) !important;
}

.btn-primary {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    transition: all var(--transition-speed) ease;
}

.btn-primary:hover {
    background-color: var(--primary-light-blue);
    border-color: var(--primary-light-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(10, 95, 140, 0.3);
}

.btn-outline-primary {
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-outline-primary:hover {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.text-primary {
    color: var(--primary-blue) !important;
}

.btn-secondary {
    background-color: var(--secondary-blue);
    border-color: var(--secondary-blue);
}

.btn-secondary:hover {
    background-color: var(--accent-teal);
    border-color: var(--accent-teal);
}

/* === PASSWORD VISIBILITY TOGGLE (eye icon) === */
.password-field {
    position: relative;
}

.password-field .form-control {
    padding-right: 3.25rem;
}

.password-toggle-btn {
    position: absolute;
    top: 50%;
    right: 0.75rem;
    transform: translateY(-50%);
    width: 2.25rem;
    height: 2.25rem;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--gray-medium);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.password-toggle-btn:hover {
    background: var(--gray-lighter);
    color: var(--primary-blue);
}

.password-toggle-btn:focus-visible {
    outline: 2px solid var(--secondary-blue);
    outline-offset: 2px;
}

.password-toggle-btn i {
    font-size: 1.25rem;
    line-height: 1;
}

/* === TOP BAR === */
.top-bar {
    background: white;
    padding: 1.25rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.brand-link {
    display: inline-block;
    transition: transform 0.3s ease;
}

.brand-link:hover {
    transform: scale(1.05);
}

.brand-logo {
    height: 70px;
    width: auto;
    transition: all 0.3s ease;
}

.btn-campus {
    background: var(--primary-blue);
    color: white;
    border: 2px solid var(--primary-blue);
    padding: 0.85rem 2.25rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1.05rem;
    font-family: var(--font-navbar);
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(10, 95, 140, 0.25);
}

.btn-campus:hover {
    background: var(--accent-teal);
    border-color: var(--accent-teal);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 181, 217, 0.4);
}

.btn-campus i {
    font-size: 1.3rem;
}

/* === MAIN NAVIGATION === */
.main-nav {
    background: linear-gradient(135deg, #003D5C 0%, #006090 100%);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-toggler {
    background: white;
    border: 2px solid white;
    color: var(--primary-blue);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    margin: 1rem 0;
}

.nav-toggler:hover {
    background: var(--accent-teal);
    border-color: var(--accent-teal);
    color: white;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.nav-menu-item {
    position: relative;
}

.nav-menu-link {
    display: block;
    padding: 1.3rem 1.75rem;
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.05rem;
    font-family: var(--font-navbar);
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
    position: relative;
    border-bottom: 3px solid transparent;
}

.nav-menu-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.nav-menu-link.active {
    background: rgba(255, 255, 255, 0.2);
    border-bottom-color: var(--accent-teal);
}

.nav-menu-link i {
    font-size: 1.25rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    border: none;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 0.75rem;
    margin: 0;
    min-width: 260px;
    transform-origin: top center;
    z-index: 1100;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.875rem 1.25rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    font-size: 1rem;
    font-family: var(--font-navbar);
    color: var(--gray-dark);
}

.dropdown-item i {
    font-size: 1.25rem;
    width: 28px;
    color: var(--primary-blue);
}

.dropdown-item:hover {
    background: linear-gradient(135deg, rgba(76, 181, 217, 0.15) 0%, rgba(10, 95, 140, 0.1) 100%);
    color: var(--primary-blue);
    transform: translateX(8px);
}

.dropdown-item:hover i {
    color: var(--accent-teal);
}

/* === RESPONSIVE NAVBAR === */
@media (max-width: 991.98px) {
    .top-bar {
        padding: 1rem 0;
    }
    
    .brand-logo {
        height: 50px;
    }
    
    .btn-campus {
        padding: 0.6rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .btn-campus span {
        display: none;
    }
    
    .btn-campus i {
        margin: 0 !important;
        font-size: 1.3rem;
    }
    
    .main-nav {
        position: relative;
    }
    
    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem 0;
    }
    
    .nav-menu-link {
        padding: 1rem 1.25rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .dropdown-menu {
        position: static !important;
        inset: unset !important;
        transform: none !important;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.25);
        border-left: 3px solid var(--accent-teal);
        border-radius: 0 0 8px 8px;
        margin: 0;
        padding: 0.5rem 0 0.5rem 1rem;
        animation: none !important;
    }
    
    .dropdown-item {
        color: rgba(255, 255, 255, 0.9);
        border-radius: 6px;
    }
    
    .dropdown-item:hover {
        background: rgba(255, 255, 255, 0.15);
        color: white;
        transform: none;
    }
    
    .dropdown-item i {
        color: var(--accent-teal);
    }
}

@media (max-width: 575.98px) {
    .top-bar {
        padding: 0.75rem 0;
    }
    
    .brand-logo {
        height: 40px;
    }
    
    .btn-campus {
        padding: 0.5rem 1rem;
    }
}

/* === NAVBAR ANIMATIONS === */
@keyframes slideDown {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.dropdown-menu.show {
    animation: slideDown 0.2s ease;
}

/* === HERO SECTION === */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

.hero-slide {
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 50%, var(--accent-teal) 100%);
    position: relative;
    overflow: hidden;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-slide-1 {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

.hero-slide-2 {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--accent-teal) 100%);
}

.hero-slide-3 {
    background: linear-gradient(135deg, var(--primary-light-blue) 0%, var(--primary-blue) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
}

.min-vh-75 {
    min-height: 75vh;
}

.text-white-90 {
    color: rgba(255, 255, 255, 0.9);
}

.text-white-80 {
    color: rgba(255, 255, 255, 0.8);
}

.stat-box {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-speed) ease;
}

.stat-box:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.animate-fade-in {
    animation: fadeIn 1s ease-in;
}

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

/* === CARDS === */
.card {
    border: none;
    border-radius: var(--card-radius);
    transition: all var(--transition-speed) ease;
}

.hover-lift {
    transition: all var(--transition-speed) ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.course-card .card-header {
    border-radius: var(--card-radius) var(--card-radius) 0 0;
    font-weight: 600;
}

.course-card .card-body {
    padding: 1.5rem;
}

.course-card .card-title {
    color: var(--primary-blue);
    min-height: 60px;
}

/* === ICON BOX === */
.icon-box {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-speed) ease;
}

.icon-box:hover {
    transform: scale(1.1) rotate(5deg);
}

/* === SECTIONS === */
section {
    padding: var(--section-padding);
}

.bg-light {
    background-color: var(--gray-lighter) !important;
}

/* === FOOTER === */
.footer {
    background: linear-gradient(135deg, var(--gray-dark) 0%, #1a252f 100%);
}

.footer a {
    transition: all var(--transition-speed) ease;
}

.footer a:hover {
    color: var(--accent-teal) !important;
    transform: translateX(3px);
}

.social-links a {
    transition: all var(--transition-speed) ease;
    display: inline-block;
}

.social-links a:hover {
    transform: translateY(-3px);
    color: var(--accent-teal) !important;
}

/* === BADGES === */
.badge {
    padding: 0.5rem 1rem;
    font-weight: 600;
    border-radius: 20px;
}

.bg-success {
    background-color: var(--success) !important;
}

.bg-warning {
    background-color: var(--warning) !important;
}

/* === BUTTONS === */
.btn {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* === FORMS === */
.form-control,
.form-select {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-light);
    transition: all var(--transition-speed) ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(10, 95, 140, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--gray-dark);
    margin-bottom: 0.5rem;
}

/* === TABLES === */
.table {
    border-radius: var(--card-radius);
    overflow: hidden;
}

.table thead {
    background-color: var(--primary-blue);
    color: white;
}

.table-hover tbody tr:hover {
    background-color: var(--light-blue);
}

/* === ACCORDION STYLES (Optimized for accessibility) === */
.accordion-button {
    font-size: 1.05rem;
    padding: 1.25rem 1.5rem;
    border: none;
    background-color: var(--gray-lighter);
    color: var(--primary-blue);
    transition: all var(--transition-speed) ease;
    font-weight: 600;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(76, 181, 217, 0.1);
    color: var(--primary-blue);
    box-shadow: none;
}

.accordion-button:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.25rem rgba(10, 95, 140, 0.25);
}

.accordion-button::after {
    width: 1.5rem;
    height: 1.5rem;
}

.accordion-item {
    border: 2px solid var(--gray-light);
    border-radius: var(--card-radius) !important;
    margin-bottom: 1.5rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-speed) ease;
}

.accordion-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.accordion-body {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--gray-dark);
    padding: 2rem 1.5rem;
}

.accordion-body p {
    margin-bottom: 1.25rem;
}

.accordion-body p:last-child {
    margin-bottom: 0;
}

/* === Text justification utility === */
.text-justify {
    text-align: justify;
    hyphens: auto;
}

/* === Mobile optimization for accordions === */
@media (max-width: 991.98px) {
    .accordion-button {
        padding: 1rem 1rem;
        font-size: 0.98rem;
    }
    
    .accordion-item {
        margin-bottom: 1rem;
    }
    
    .accordion-body {
        font-size: 0.98rem;
        padding: 1.5rem 1rem !important;
    }
}

/* === ALERTS === */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.5rem;
}

.bg-primary-subtle {
    background-color: rgba(30, 138, 184, 0.08) !important;
}

/* === BREADCRUMB === */
.breadcrumb {
    background-color: transparent;
    padding: 1rem 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--gray-medium);
}

.breadcrumb-item.active {
    color: var(--primary-blue);
}

/* === RESPONSIVE === */
@media (max-width: 991.98px) {
    .hero-slide {
        min-height: 500px;
    }
    
    .display-3 {
        font-size: 2.5rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    section {
        padding: 3rem 0;
    }
}

        .navbar-brand .brand-text {
            line-height: 1;
        }

        .brand-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary, #0A5F8C);
        }

        .brand-subtitle {
            font-size: 0.78rem;
            color: rgba(0,0,0,0.55);
            margin-top: 0.08rem;
        }

        .logo-img {
            height: 48px;
            width: auto;
            display: inline-block;
        }

        @media (max-width: 767.98px) {
            .logo-img { height: 40px; }
            .brand-name { font-size: 0.98rem; }
        }

        @media (min-width: 992px) {
            /* Give a little more space to the SERS buttons on wide screens */
            .navbar .d-flex.ms-lg-3 { margin-left: 1rem; }
        }

        /* Ensure navbar items are vertically centered */
        .navbar .navbar-nav .nav-link { padding-top: 0.6rem; padding-bottom: 0.6rem; }

        /* Small visual polish for navbar buttons */
        .navbar .btn-outline-primary, .navbar .btn-outline-secondary {
            border-width: 1px;
            padding-top: 0.35rem;
            padding-bottom: 0.35rem;
        }

@media (max-width: 767.98px) {
    .hero-slide {
        min-height: 400px;
    }
    
    .display-3 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* === UTILITIES === */
.shadow-sm {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08) !important;
}

.shadow {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1) !important;
}

/* === LOADING ANIMATION === */
.spinner-border-primary {
    color: var(--primary-blue);
}

/* === CUSTOM SCROLLBAR === */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light-blue);
}

/* === PRINT STYLES === */
@media print {
    .navbar,
    .footer,
    .btn {
        display: none !important;
    }
}

/* === PWA INSTALL BANNER === */
.pwa-install-banner {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    width: min(480px, calc(100% - 2rem));
    background: #003d5c;
    color: #fff;
    border-radius: 16px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
    padding: 1rem 1.25rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    z-index: 1200;
    animation: pwaSlideUp 280ms ease forwards;
}

.pwa-install-banner .pwa-install-content {
    flex: 1;
}

.pwa-install-banner .pwa-install-content p {
    margin: 0.25rem 0 0;
    font-size: 0.95rem;
    opacity: 0.9;
}

.pwa-install-banner .pwa-install-actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 120px;
    align-items: flex-end;
}

.pwa-install-banner .btn-primary {
    background: #00a6d6;
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 0.4rem 1.25rem;
    border-radius: 999px;
    font-size: 0.9rem;
}

.pwa-install-banner .btn-link {
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.85rem;
    border: none;
    padding: 0;
}

.pwa-install-banner button:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

.pwa-install-banner.mode-ios {
    background: #005f89;
}

@media (max-width: 575.98px) {
    .pwa-install-banner {
        flex-direction: column;
        text-align: center;
    }

    .pwa-install-banner .pwa-install-actions {
        width: 100%;
        align-items: center;
    }
}

@keyframes pwaSlideUp {
    from {
        opacity: 0;
        transform: translate(-50%, 15px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}