/* =========================================================
   SIAAN - LOGIN INSTITUCIONAL
   Liceo Nuestra Señora de las Nieves
   Archivo: css/login.css
   ========================================================= */

:root {
    --login-rojo: #B51220;
    --login-rojo-oscuro: #8E0E19;
    --login-rojo-claro: #FCEDEF;
    --login-azul: #203958;
    --login-texto: #29374A;
    --login-texto-secundario: #778397;
    --login-blanco: #FFFFFF;
    --login-fondo: #F6F6F8;
    --login-borde: #D5D9E0;
    --login-error: #B42332;
}

/* Reinicio básico */

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
    margin: 0;
}

body {
    font-family: "Segoe UI", Arial, sans-serif;
    color: var(--login-texto);
    background: var(--login-fondo);
}

.login_pagina {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(440px, 0.92fr);
    min-height: 100vh;
    width: 100%;
    overflow: hidden;
}

/* =========================================================
   PANEL INSTITUCIONAL
   ========================================================= */

.login_panel_institucional {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100vh;
    padding: 42px 48px;
    overflow: hidden;
    isolation: isolate;
    background-color: #E8EFF7;
    background-image: linear-gradient( 180deg, rgba(15, 30, 48, 0.18) 0%, rgba(15, 30, 48, 0.05) 35%, rgba(15, 30, 48, 0.68) 100% ), url("../Images/ImgInicio/estudiantes-lnsn.png");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
/*
.login_panel_institucional {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100vh;
    padding: 42px 48px;
    overflow: hidden;
    isolation: isolate;
    background-color: #E8EFF7;
    background-image: linear-gradient( 180deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.02) 48%, rgba(22,38,57,0.42) 100% ), url("../Images/ImgInicio/estudiantes-lnsn.png");
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}*/

    /* Formas decorativas */

    .login_panel_institucional::before {
        content: "";
        position: absolute;
        z-index: -1;
        top: -150px;
        right: -180px;
        width: 390px;
        height: 390px;
        border-radius: 50%;
        background: var(--login-rojo);
        opacity: 0.94;
    }

    .login_panel_institucional::after {
        content: "";
        position: absolute;
        z-index: -1;
        right: -210px;
        bottom: -260px;
        width: 500px;
        height: 500px;
        border: 48px solid rgba(181,18,32,0.85);
        border-radius: 50%;
        pointer-events: none;
    }

/* Escudo y nombre del colegio */

.login_marca {
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
    max-width: 780px;
}

.login_escudo {
    display: block;
    flex: 0 0 auto;
    width: 130px;
    height: 130px;
    object-fit: contain;
}

.login_identidad {
    min-width: 0;
}

.login_nombre_colegio {
    display: block;
    margin-bottom: 2px;
    color: var(--login-rojo);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(27px, 2.5vw, 42px);
    font-weight: 700;
    line-height: 1.1;
}
.login_identidad h1 {
    margin: 0;
    color: #FFFFFF;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(15px, 1.35vw, 22px);
    font-weight: 700;
    line-height: 1.35;
    /* Mejora la lectura sobre la fotografía */
    text-shadow: 1px 2px 3px rgba(0, 0, 0, 0.85), 0 0 8px rgba(0, 0, 0, 0.35);
}

.login_separador {
    width: 90px;
    height: 3px;
    margin: 13px 0;
    background: var(--login-rojo);
    border-radius: 3px;
}

.login_identidad p {
    margin: 0;
    color: var(--login-blanco);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.3px;
    text-shadow: 1px 2px 3px rgba(0, 0, 0, 0.85), 0 0 8px rgba(0, 0, 0, 0.35);
}

/* Mensaje institucional */

.login_mensaje_institucional {
    max-width: 590px;
    margin-top: 70px;
    margin-bottom: 30px;
    padding: 24px;
    border-left: 5px solid var(--login-rojo);
    border-radius: 0 12px 12px 0;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(5px);
}

.login_etiqueta {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--login-rojo);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.8px;
}

.login_mensaje_institucional h2 {
    margin: 0 0 13px;
    color: var(--login-azul);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(27px, 2.6vw, 40px);
    line-height: 1.18;
}

.login_mensaje_institucional p {
    max-width: 460px;
    margin: 0;
    color: #526174;
    font-size: 15px;
    line-height: 1.8;
}

.login_pie_institucional {
    color: var(--login-blanco);
    font-size: 12px;
    font-weight: 500;
    text-shadow: 0 1px 5px rgba(0,0,0,0.45);
}

/* =========================================================
   PANEL DE ACCESO
   ========================================================= */

.login_panel_acceso {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 100vh;
    padding: 48px;
    background: radial-gradient( circle at 100% 100%, #F0EDEF 0, transparent 38% ), var(--login-blanco);
}

.login_formulario {
    width: 100%;
    max-width: 440px;
    padding: 42px 38px;
    border: 1px solid rgba(213,217,224,0.55);
    border-radius: 22px;
    background: rgba(255,255,255,0.96);
    box-shadow: 0 18px 60px rgba(32,57,88,0.08);
}

.login_acento {
    width: 64px;
    height: 5px;
    margin: 0 auto 24px;
    border-radius: 10px;
    background: var(--login-rojo);
}

.login_bienvenida {
    margin: 0;
    color: var(--login-azul);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(25px, 2.3vw, 34px);
    font-weight: 700;
    text-align: center;
}

.login_titulo {
    margin: 2px 0 8px;
    color: var(--login-rojo);
    font-size: clamp(38px, 3.3vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    text-align: center;
    letter-spacing: 1px;
}

.login_subtitulo {
    margin: 0 0 34px;
    color: var(--login-texto-secundario);
    font-size: 15px;
    text-align: center;
}

/* Campos */

.login_campo {
    display: flex;
    flex-direction: column;
    margin-bottom: 23px;
}

.login_label {
    display: block;
    margin-bottom: 9px;
    color: var(--login-azul);
    font-size: 14px;
    font-weight: 700;
}

.login_input {
    display: block;
    width: 100%;
    height: 53px;
    padding: 0 16px;
    border: 1px solid var(--login-borde);
    border-radius: 11px;
    outline: none;
    background: #FAFAFB;
    color: var(--login-texto);
    font-family: inherit;
    font-size: 15px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

    .login_input::placeholder {
        color: #929BAA;
    }

    .login_input:focus {
        border-color: var(--login-rojo);
        background: var(--login-blanco);
        box-shadow: 0 0 0 4px rgba(181,18,32,0.10);
    }

/* Botón */

.login_boton {
    display: block;
    width: 100%;
    min-height: 55px;
    margin-top: 10px;
    padding: 14px 20px;
    border: none;
    border-radius: 11px;
    background: linear-gradient( 110deg, var(--login-rojo) 0%, #C91D2B 100% );
    color: var(--login-blanco);
    font-family: inherit;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow: 0 7px 18px rgba(181,18,32,0.20);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

    .login_boton:hover {
        background: var(--login-rojo-oscuro);
        box-shadow: 0 10px 23px rgba(181,18,32,0.26);
        transform: translateY(-1px);
    }

    .login_boton:focus-visible {
        outline: 3px solid rgba(181,18,32,0.35);
        outline-offset: 3px;
    }

    .login_boton:active {
        transform: translateY(0);
    }

/* Errores y validaciones */

.login_mensaje_error {
    margin-bottom: 15px;
    color: var(--login-error);
    font-size: 13px;
    line-height: 1.5;
}

.login_validacion {
    display: block;
    margin-top: 7px;
    color: var(--login-error);
    font-size: 12px;
    line-height: 1.4;
}

/* Recuperación de contraseña */

.login_ayuda {
    margin-top: 24px;
    text-align: center;
}

    .login_ayuda a {
        color: var(--login-rojo);
        font-size: 13px;
        font-weight: 700;
        text-decoration: none;
    }

        .login_ayuda a:hover {
            color: var(--login-rojo-oscuro);
            text-decoration: underline;
        }

.login_nota {
    margin-top: 29px;
    padding-top: 19px;
    border-top: 1px solid #ECEEF2;
    color: #929BAA;
    font-size: 11px;
    line-height: 1.6;
    text-align: center;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1100px) {
    .login_pagina {
        grid-template-columns: minmax(0, 1fr) minmax(390px, 0.9fr);
    }

    .login_panel_institucional {
        padding: 32px;
    }

    .login_escudo {
        width: 95px;
        height: 95px;
    }

    .login_marca {
        gap: 14px;
    }

    .login_panel_acceso {
        padding: 30px;
    }

    .login_formulario {
        padding: 34px 27px;
    }
}

@media (max-width: 760px) {
    .login_pagina {
        display: flex;
        flex-direction: column;
        overflow: visible;
    }

    .login_panel_institucional {
        min-height: 300px;
        padding: 25px 22px;
        background-position: center 38%;
    }

    .login_marca {
        align-items: center;
        gap: 12px;
    }

    .login_escudo {
        width: 72px;
        height: 72px;
    }

    .login_nombre_colegio {
        font-size: 27px;
    }

    .login_identidad h1 {
        font-size: 13px;
    }

    .login_separador {
        margin: 7px 0;
    }

    .login_identidad p {
        font-size: 12px;
    }

    .login_mensaje_institucional {
        max-width: 440px;
        margin: 40px 0 0;
        padding: 17px;
    }

        .login_mensaje_institucional h2 {
            font-size: 25px;
        }

        .login_mensaje_institucional p {
            font-size: 13px;
        }

    .login_pie_institucional {
        display: none;
    }

    .login_panel_acceso {
        min-height: auto;
        padding: 28px 18px 38px;
    }

    .login_formulario {
        max-width: 460px;
        padding: 30px 23px;
        border-radius: 17px;
    }

    .login_subtitulo {
        margin-bottom: 28px;
    }
}

@media (max-width: 380px) {
    .login_panel_institucional {
        padding: 20px 15px;
    }

    .login_escudo {
        width: 57px;
        height: 57px;
    }

    .login_nombre_colegio {
        font-size: 23px;
    }

    .login_identidad h1 {
        font-size: 11px;
    }

    .login_panel_acceso {
        padding: 22px 12px;
    }

    .login_formulario {
        padding: 27px 17px;
    }
}

/* =========================================
   LOGIN RESPONSIVE: SOLO FORMULARIO
   ========================================= */

@media (max-width: 760px) {

    .login_panel_institucional {
        display: none !important;
    }

    .login_pagina {
        display: flex;
        flex-direction: column;
        width: 100%;
        min-height: 100vh;
        min-height: 100dvh;
        overflow: visible;
        background: #FFFFFF;
    }

    .login_panel_acceso {
        display: flex;
        flex: 1;
        align-items: center;
        justify-content: center;
        width: 100%;
        min-width: 0;
        min-height: 100vh;
        min-height: 100dvh;
        padding: 24px 16px;
        background: #FFFFFF;
    }

    .login_formulario {
        width: 100%;
        max-width: 440px;
        padding: 30px 22px;
        border: none;
        border-radius: 0;
        box-shadow: none;
        background: #FFFFFF;
    }

    .login_bienvenida {
        font-size: 28px;
    }

    .login_titulo {
        font-size: 44px;
    }

    .login_input {
        width: 100%;
        min-height: 50px;
    }

    .login_boton {
        width: 100%;
        min-height: 52px;
    }
}

/* Celulares pequeños */

@media (max-width: 380px) {

    .login_panel_acceso {
        padding: 18px 12px;
    }

    .login_formulario {
        padding: 24px 12px;
    }

    .login_bienvenida {
        font-size: 25px;
    }

    .login_titulo {
        font-size: 38px;
    }
}

/* Marca de agua institucional */
.login_panel_acceso {
    position: relative;
    isolation: isolate;
    overflow: hidden;
}

    /* Nombre del colegio como marca de agua */
    .login_panel_acceso::before {
        content: "LICEO NUESTRA SEÑORA DE LAS NIEVES";
        position: absolute;
        z-index: -1;
        top: 50%;
        left: 50%;
        width: 100%;
        padding: 20px;
        color: rgba(181, 18, 32, 0.045);
        font-family: Georgia, "Times New Roman", serif;
        font-size: clamp(28px, 3.5vw, 52px);
        font-weight: 800;
        line-height: 1.4;
        letter-spacing: 3px;
        text-align: center;
        overflow-wrap: anywhere;
        transform: translate(-50%, -50%);
        pointer-events: none;
        user-select: none;
    }

/* Mantener el formulario por encima de la marca */
.login_formulario {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.92);
}