:root {
    --color-orange: #D75A1B;
    --color-yellow: #F4AF23;
    --color-blue: #287DA1;
    --color-teal: #319C8A;
    --color-black: #212322;
    --color-bg: #F0EEE9;
    --color-text-secondary: #668090;
    --color-border: #D8D3C8;
    --color-white: #FFFFFF;
}

body {
    background-color: var(--color-bg);
    color: var(--color-black);
    font-family: 'Source Sans 3', sans-serif;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: 'Fira Sans', sans-serif;
    font-weight: 700;
}

.subtitle {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
}

/* Navbar */
.navbar {
    background-color: var(--color-white);
    border-bottom: 2px solid var(--color-border);
}
.nav-link {
    color: var(--color-black);
    font-weight: 500;
    transition: color 0.3s ease;
}
.nav-link:hover {
    color: var(--color-orange);
}

.navbar .nav-link.active-nav-isyb {
    color: var(--color-orange);
    font-weight: 700;
    position: relative;
}

.navbar .nav-link.active-nav-isyb::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background-color: var(--color-teal);
    border-radius: 2px;
}

.btn-primary-isyb {
    background-color: var(--color-orange);
    color: var(--color-white);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}
.btn-primary-isyb:hover {
    background-color: #c04e15;
    color: var(--color-white);
}

/* Hero Section */
.hero-section {
    background: url('../img/bg_hero.png') center/cover no-repeat;
    padding: 60px 0;
    text-align: center;
}
.hero-box {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    display: inline-block;
    max-width: 900px;
}
.hero-box h1 {
    color: var(--color-black);
}
.hero-box h1 span {
    color: var(--color-orange);
}

.btn-outline-isyb {
    border: 2px solid var(--color-blue);
    color: var(--color-blue);
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: 600;
}
.btn-outline-isyb:hover {
    background-color: var(--color-blue);
    color: var(--color-white);
}

/* Franja Institucional */
.franja-institucional {
    position: relative;
    padding: 80px 0;
    z-index: 1;
}

.franja-institucional::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/home_secc01.png') center/cover no-repeat;
    opacity: 0.4;
    z-index: -1;
}

/* Sección Modelo Pedagógico */
.seccion-pedagogico {
    background: url('../img/home_secc02.png') center/cover no-repeat;
    position: relative;
}

/* Imagen El Instituto */
.seccion-instituto-img {
    background: url('../img/home_secc03.png') center/cover no-repeat;
}
@media (min-width: 768px) {
    .w-md-50 {
        width: 50% !important;
    }
}

/* Bloques Conceptuales y Utilidades de Color */
.bg-orange { background-color: var(--color-orange) !important; }
.bg-blue { background-color: var(--color-blue) !important; }
.bg-yellow { background-color: var(--color-yellow) !important; color: var(--color-black); }
.bg-teal { background-color: var(--color-teal) !important; }

.text-orange { color: var(--color-orange) !important; }
.text-blue { color: var(--color-blue) !important; }
.text-yellow { color: var(--color-yellow) !important; }
.text-teal { color: var(--color-teal) !important; }

.concept-block {
    padding: 40px 20px;
    color: var(--color-white);
    border-radius: 8px;
    margin-bottom: 20px;
    height: 100%;
}

/* Modelos pedagógicos */
.stat-box {
    text-align: center;
    padding: 20px;
}
.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-orange);
}

/* Footer */
footer {
    background-color: var(--color-white);
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}
.footer-text {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}
.footer-bar {
    height: 20px;
    background: linear-gradient(to right, var(--color-orange) 25%, var(--color-yellow) 25%, var(--color-yellow) 50%, var(--color-blue) 50%, var(--color-blue) 75%, var(--color-teal) 75%);
}