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

/* --- Paleta de Colores y Variables --- */
:root {
    --color-primario: #005A9C; /* Azul oscuro */
    --color-secundario: #00A859; /* Verde */
    --color-fondo: #f4f7f6;
    --color-texto: #333;
    --color-blanco: #ffffff;
    --color-borde: #ddd;
    --color-error: #d9534f;
    --sombra-caja: 0 4px 12px rgba(0, 0, 0, 0.08);
    --sombra-caja-hover: 0 6px 16px rgba(0, 0, 0, 0.12);
}

/* --- Estilos Generales --- */
body {
    font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
}

h1, h2, h3, h4, h5 {
    color: var(--color-primario);
    font-weight: 500;
    text-align: center;
}

/* --- Contenedores Principales --- */
.login-container, .landing-container, .dashboard-container {
    background-color: var(--color-blanco);
    padding: 2rem 3rem;
    border-radius: 10px;
    box-shadow: var(--sombra-caja);
    width: 100%;
    max-width: 900px;
    margin: 2rem;
}

/* Estilos específicos para la página de inicio */
.landing-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* REEMPLAZA 'background.jpg' con una imagen tuya */
    background: url('background.jpg') no-repeat center center/cover;
    filter: blur(3px) brightness(0.7);
    z-index: -1; /* Para que esté detrás del contenido */
    transform: scale(1.05); /* Evita bordes borrosos en los extremos */
}

.landing-container {
    background-color: rgba(244, 247, 246, 0.9); /* Fondo semi-transparente */
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(2px); /* Efecto "glassmorphism" sutil */
}

.dashboard-container {
    max-width: 1200px;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--color-secundario);
    padding-bottom: 1rem;
}

.landing-container h1 {
    color: var(--color-primario);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
}

.landing-container p { color: #555; font-weight: 500; }

.logo {
    max-width: 100px;
    margin-bottom: 1rem;
}

/* --- Formularios --- */
form {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: 1.2rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--color-primario);
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="date"],
textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--color-borde);
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--color-secundario);
    box-shadow: 0 0 0 3px rgba(0, 168, 89, 0.15);
}

/* --- Botones --- */
button, .btn-principal {
    background-color: var(--color-secundario);
    color: var(--color-blanco);
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.2s ease-in-out;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    box-shadow: var(--sombra-caja);
}

button:hover, .btn-principal:hover {
    background-color: #008c4a;
    transform: translateY(-2px);
    box-shadow: var(--sombra-caja-hover);
}

button:active, .btn-principal:active {
    transform: translateY(0);
    box-shadow: var(--sombra-caja);
}

button[type="submit"] {
    background-color: var(--color-primario);
    align-self: center; /* Centra el botón dentro del formulario */
    width: fit-content; /* Ajusta el ancho al contenido del botón */
}

button[type="submit"]:hover {
    background-color: #004a80;
}

.error-message {
    color: var(--color-error);
    text-align: center;
    margin-top: 1rem;
    font-weight: bold;
}

/* --- Dashboard --- */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: none;
    padding-bottom: 0;
}

.header-info { display: flex; align-items: center; gap: 1rem; }
.logo-small { max-width: 50px; }
.dashboard-header h1 { margin: 0; font-size: 1.5rem; }
#logout-button { background-color: var(--color-error); }
#logout-button:hover { background-color: #c9302c; }

.activities-list {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.activity-card {
    background: var(--color-blanco);
    border: 1px solid var(--color-borde);
    border-left: 5px solid var(--color-secundario);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: var(--sombra-caja);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra-caja-hover);
}

.activity-card h4 { margin-top: 0; color: var(--color-primario); font-weight: 700; }
.activity-card-actions { margin-top: 1rem; display: flex; gap: 0.5rem; }
.activity-card-actions button { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
.btn-join { background-color: var(--color-primario); }
.btn-join:hover { background-color: #004a80; }
.btn-edit { background-color: var(--color-primario); }
.btn-delete { background-color: var(--color-error); }

/* --- Modal --- */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--color-blanco);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 8px;
    width: 80%;
    max-width: 600px;
    position: relative;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    top: 10px;
    right: 20px;
}

.close-button:hover, .close-button:focus {
    color: var(--color-texto);
    text-decoration: none;
    cursor: pointer;
}

.checklist-box {
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--color-borde);
    padding: 0.5rem;
    border-radius: 5px;
}
.checklist-box label { font-weight: normal; }

/* --- Estilos para Solicitudes Pendientes --- */
.pending-requests {
    margin-top: 1rem;
    border-top: 1px solid var(--color-borde);
    padding-top: 1rem;
}
.pending-requests h5 {
    margin: 0 0 0.5rem 0;
    color: #f0ad4e; /* Naranja para pendiente */
}
.pending-requests ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.pending-requests li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}
.pending-requests li:last-child { border-bottom: none; }
.pending-requests button { padding: 0.2rem 0.5rem; font-size: 0.75rem; margin-left: 0.5rem; }
.btn-accept { background-color: var(--color-secundario); }
.btn-accept:hover { background-color: #008c4a; }
.btn-reject { background-color: var(--color-error); }
.btn-reject:hover { background-color: #c9302c; }

/* --- Estilos para la Tabla de Estudiantes --- */
.table-container {
    margin-top: 2rem;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

table th, table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--color-borde);
}

table th {
    background-color: var(--color-fondo);
    color: var(--color-primario);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
}

table tr:hover {
    background-color: #e9f5ff;
}

table td .btn-edit,
table td .btn-delete {
    margin-right: 0.5rem;
}

.empty-table-message { padding: 2rem; text-align: center; color: #777; }

/* --- Estilos para la Ruta del Estudiante --- */
.process-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.process-card {
    background: var(--color-blanco);
    border: 1px solid var(--color-borde);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--sombra-caja);
    display: flex;
    flex-direction: column;
}

.process-card-title {
    color: #008c4a; /* Verde solicitado */
    margin-top: 0;
    text-align: left;
    border-bottom: 2px solid #008c4a;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.process-card ul {
    list-style-type: '• ';
    padding-left: 1rem;
    margin: 0;
    color: #555;
}
.process-card li { padding-left: 0.5rem; margin-bottom: 0.75rem; line-height: 1.4; }