/* ===============================
   FONT
================================ */
@font-face {
    font-family: 'Montserrat';
    src: url('../Fonts/montserrat/Montserrat-Regular.otf') format('opentype');
    font-display: swap;
}

/* ===============================
   VARIABLES
================================ */
:root {
    --background: #aae1f8;
    --dark-primary: #18283b;
    --dark-secondary: #2c3e50;
    --light-primary: #f5f6fa;
    --light-secondary: #8392a5;

    /* Derived tokens */
    --card-bg: rgba(255, 255, 255, 0.55);
    --card-border: rgba(255, 255, 255, 0.85);
    --input-bg: rgba(255, 255, 255, 0.6);
    --input-border: rgba(170, 225, 248, 0.6);
    --input-focus-border: var(--dark-secondary);
    --shadow-card: 0 8px 40px rgba(24, 40, 59, 0.13), 0 1.5px 6px rgba(24, 40, 59, 0.07);
    --shadow-btn: 0 4px 18px rgba(44, 62, 80, 0.22);
    --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
    height: 100%;
}

body {
    font-family: 'Montserrat', 'Segoe UI', sans-serif;
    background-color: var(--background);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===============================
   PAGE WRAPPER
================================ */
.page {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
    animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================
   HEADING
================================ */
.page h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--dark-secondary);
    text-align: center;
    margin-bottom: 2.2rem;
    opacity: 0.75;
    animation: fadeUp 0.6s 0.1s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* ===============================
   CARD / FORM
================================ */
.formlogin {
    background: var(--card-bg);
    border: 1.5px solid var(--card-border);
    border-radius: 20px;
    padding: 2.8rem 2.6rem 2.4rem;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animation initiale uniquement sur le formulaire de connexion */
#form-login {
    animation: fadeUp 0.6s 0.15s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* ===============================
   MESSAGES DJANGO
================================ */
#safelogin,
#erreurlogin {
    border-radius: 10px;
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
    line-height: 1.5;
    text-align: center;
}

#safelogin {
    background: rgba(170, 225, 248, 0.35);
    border: 1px solid rgba(44, 62, 80, 0.15);
    color: var(--dark-secondary);
}

#erreurlogin {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.25);
    color: #c0392b;
}

/* ===============================
   LABEL / INPUTS
================================ */
.formlogin label {
    display: block;
    width: 100%;
}

.formlogin input {
    width: 100%;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: 10px;
    padding: 0.82rem 1.1rem;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--dark-primary);
    outline: none;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.formlogin input::placeholder {
    color: var(--light-secondary);
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

.formlogin input:focus {
    border-color: var(--dark-secondary);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 0 0 3.5px rgba(44, 62, 80, 0.1);
}

/* ===============================
   BUTTON
================================ */
.formlogin button {
    width: 100%;
    margin-top: 0.4rem;
    padding: 0.9rem 1.2rem;
    background: var(--dark-primary);
    color: var(--light-primary);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.formlogin button::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0);
    transition: background var(--transition);
}

.formlogin button:hover {
    background: var(--dark-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(44, 62, 80, 0.28);
}

.formlogin button:hover::after {
    background: rgba(255, 255, 255, 0.05);
}

.formlogin button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-btn);
}

/* ===============================
   LIENS (mot de passe oublié, retour…)
================================ */
.formlogin a {
    display: block;
    text-align: center;
    text-decoration: none;
    margin-top: 0.2rem;
}

.formlogin a p {
    font-size: 0.78rem;
    color: var(--light-secondary);
    letter-spacing: 0.04em;
    transition: color var(--transition);
    display: inline-block;
    position: relative;
}

.formlogin a p::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--dark-secondary);
    transition: width var(--transition);
}

.formlogin a:hover p {
    color: var(--dark-secondary);
}

.formlogin a:hover p::after {
    width: 100%;
}

/* ===============================
   RESPONSIVE
================================ */
@media (max-width: 480px) {
    .formlogin {
        padding: 2rem 1.5rem;
        border-radius: 16px;
    }
}

/* ===============================
   FORMULAIRE MOT DE PASSE OUBLIÉ
================================ */
.forgot-intro {
    font-size: 0.8rem;
    color: var(--light-secondary);
    line-height: 1.6;
    text-align: center;
}

/* ===============================
   TRANSITIONS ENTRE FORMULAIRES
================================ */
.formlogin--hidden {
    display: none;
}

.formlogin--fade-out {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

.formlogin--fade-in {
    animation: formSlideIn 0.28s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes formSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================
   MESSAGES DE VALIDATION JS
================================ */
.msg--error {
    border-radius: 10px;
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
    line-height: 1.5;
    text-align: center;
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.25);
    color: #c0392b;
}

.msg--success {
    border-radius: 10px;
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
    line-height: 1.5;
    text-align: center;
    background: rgba(26, 110, 60, 0.08);
    border: 1px solid rgba(26, 110, 60, 0.2);
    color: #1a6e3c;
}

/* ===============================
   VALIDATION — champ en erreur
================================ */
.formlogin input.input--error {
    border-color: #e74c3c;
    background: rgba(231, 76, 60, 0.05);
    box-shadow: 0 0 0 3.5px rgba(231, 76, 60, 0.12);
}