/* --- Mode Dark --- */
:root {

    /* ------------------------------------------------------------
       PALETTE PRINCIPALE
    ------------------------------------------------------------ */
    --accent: #00c2ff;
    --accent-light: #4ddcff;
    --accent-dark: #008bb8;

    /* ------------------------------------------------------------
       FOND & TEXTE
    ------------------------------------------------------------ */
    --color-bg: #0f0f11;
    --color-bg-alt: #16161a;

    --color-text: #e6e6e6;
    --color-text-muted: #a8a8a8;

    /* ------------------------------------------------------------
       COULEURS D'ÉTAT (erreur, succès, avertissement)
    ------------------------------------------------------------ */
    --red: #ff4d4d;
    --red-light: #ff8080;
    --red-bg: rgba(255, 0, 0, 0.15);

    --green: #4dff4d;
    --green-light: #80ff80;
    --green-bg: rgba(0, 255, 0, 0.15);

    --yellow: #ffd966;
    --yellow-light: #ffecb3;

    /* ------------------------------------------------------------
       COULEURS NEUTRES / STRUCTURE
    ------------------------------------------------------------ */
    --gray: #2a2a2e;
    --gray-light: #3a3a40;
    --gray-bg: #1a1a1d;

    --separator: #ccc;
    --pastille-border: #555;

    /* ------------------------------------------------------------
       CARTES / BLOCS
    ------------------------------------------------------------ */
    --card-bg: var(--gray-bg);
    --card-border: var(--gray);
    --radius-border: 6px;

    /* ------------------------------------------------------------
       FORMULAIRES
    ------------------------------------------------------------ */
    --form-bg: #1b1b1e;
    --form-border: #2c2c31;

    --input-bg: #242428;
    --input-border: #3a3a40;
    --input-text: #ffffff;

    /* ------------------------------------------------------------
       BOUTONS
    ------------------------------------------------------------ */
    --btn-bg: var(--accent);
    --btn-text: #000;
    --btn-bg-hover: var(--accent-light);
    --btn-bg-active: var(--accent-dark);

    --disabled-bg: #ccc;

    /* ------------------------------------------------------------
       TITRES / TYPOGRAPHIE
    ------------------------------------------------------------ */
    --title-color: #e0e0e0;
    --meta-color: #e0e0e0;

    --gradient-end: #7d4dff;

    /* ------------------------------------------------------------
       TABLEAUX / LIGNES / SUIVI
    ------------------------------------------------------------ */
    --suivi-user-color: var(--accent);
    --row-bg: #1a1a1a;
    --row-border: #2c2c2c;
}


/* --- Global --- */
body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: var(--color-bg);
    color: var(--color-text);
}

h1 {
    font-size: 3.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    background: linear-gradient(90deg, var(--accent), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

/* --- Header & footer --- */
header h1 {
    flex: 1;
    text-align: center;
    margin: 0 0 15px 0;
}


footer {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 25px;
    font-size: 0.9em;
}

.logo-smartlearn {
    width: 820px;
    height: auto;
    border-radius: 12px;
    display: block;
    margin: 0 auto 15px auto;
}

.menu-right {
    display: flex;
    justify-content: flex-end; /* bouton à droite */
    width: auto;
}

/* Style du bouton About */
.btn-about {
    display: inline-block;
    padding: 8px 14px;
    margin-top: 15px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    border-radius: var(--radius-border);
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.btn-about:hover {
    background-color: var(--btn-bg-hover);
}

.btn-about:active {
    background-color: var(--btn-bg-active);
}

/* -------------------------- login ------------------------------ */

.container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 40px;
}

.form-spacing {
    margin-bottom: 40px;
}

.form-grid {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 10px 20px;
    width: auto;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--form-border);
    border-radius: var(--radius-border);
    background: var(--form-bg);
}

.form-grid input[type="text"],
.form-grid input[type="password"],
.form-grid input[type="email"],
.form-grid input[type="date"],
.form-grid input[type="time"],
.form-grid input[type="number"],
.form-grid textarea,
.form-grid select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--input-text);
    padding: 8px;
    border-radius: var(--radius-border);
    resize: none;
}

.prix-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.prix-wrapper input {
    flex: 1;
}

.prix-unit {
    color: var(--input-text);
}

.submit-btn {
    display: inline-block;
    grid-column: 1 / span 2;
    margin-top: 10px;
    padding: 10px;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    border-radius: var(--radius-border);
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.2;
}

.submit-btn:hover {
    background: var(--btn-bg-hover);
}

.submit-btn.disabled {
    background-color: var(--disabled-bg);
    cursor: not-allowed;
    opacity: 0.6;
}

/* -------------------------- user ------------------------------ */

.info-form {
    text-align: center;
    max-width: 500px;
    margin: 0 auto 20px auto;
}

/* -------------------------- layout ------------------------------ */

.box {
    display: flex;
}

.border {
    border-color: var(--btn-bg);
    border-style: solid;
    border-width: 2px;
}

.sidebar {
    width: 15%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sidebar a {
    display: block;
    padding: 12px 18px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    text-decoration: none;
    border-radius: var(--radius-border);
    font-weight: bold;
    text-align: center;
    transition: background-color 0.2s ease;
}

.sidebar a:hover {
    background-color: var(--btn-bg-hover);
}

.sidebar a.active {
    background-color: var(--btn-bg-active);
    color: var(--color-text);
}

.content {
    width: 85%;
}

.header-user {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 15px;
    padding-right: 20px;
}

.user-name {
    margin: 0;
    text-align: right;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: var(--btn-bg);
    border-radius: var(--radius-border);
}

.btn-icon img {
    width: 20px;
    height: 20px;
}

.btn-icon:hover {
    background-color: var(--btn-bg-active);
}

.about-content {
    text-align: left;
    max-width: 1400px;
}

/* -------------------------- list ------------------------------ */

.course-container {
    display: flex;
    gap: 30px;
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
}

.suivi-colum {
    background: var(--card-bg);
    border-radius: 6px;
    border: 1px solid var(--form-border);
}

/* Liste des cours */
.course-list {
    width: 250px;
    flex-shrink: 0;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius-border);
    border: 1px solid var(--card-border);
}

.course-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.course-list li {
    margin-bottom: 12px;
}

.course-list a {
    text-decoration: none;
    color: var(--accent);
    font-weight: 600;
}

.course-list a:hover {
    text-decoration: underline;
}

/* Bloc descriptif */
.course-details {
    flex: 1;
    min-width: 0;
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-border);
    border: 1px solid var(--card-border);
}

.course-details h3 {
    margin-top: 0;
    color: var(--accent);
    font-size: 20px;
    margin-bottom: 10px;
}

.course-description {
    margin-bottom: 25px;
    line-height: 1.5;
    color: var(--color-text);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Informations du cours */
.course-info {
    display: flex;
    gap: 200px;
}

.info-col p {
    margin: 8px 0;
    color: var(--color-text);
}

.info-col strong {
    color: var(--accent);
}

/* Conteneur de chaque ligne */
.course-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--accent);
    font-weight: 600;
}

/* On cache le vrai input radio */
.course-item input[type="radio"] {
    display: none;
}

/* Le petit carré */
.course-item .square {
    width: 16px;
    height: 16px;
    border: 2px solid var(--accent);
    border-radius: 3px;
    display: inline-block;
    transition: 0.2s;
}

/* Quand sélectionné → carré rempli */
.course-item input[type="radio"]:checked + .square {
    background-color: var(--accent);
    border-color: var(--accent);
}

.form-grid fieldset {
    border: none;
    padding: 0;
    margin: 0;
    background: transparent;
}

/* -------------------------- cours ------------------------------ */

.suivi-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding: 20px;
}

.suivi-row {
    display: flex;
    align-items: center;
    gap: 30px;
    background: var(--row-bg);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--row-border);
}

.suivi-user {
    width: 150px;
    font-weight: bold;
    color: var(--suivi-user-color);
    margin: 20px 0px 0px 20px;
}

.suivi-course {
    flex: 1;
    margin: 20px 0px 20px 20px;
}

.course-title,
.course-meta {
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--title-color);
}

.course-title { font-size: 18px; }
.course-meta  { font-size: 16px; }


.pastilles {
    display: flex;
    gap: 15px;
}

.pastille {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--pastille-border);
    transition: 0.2s;
    pointer-events: auto;
}


.pastille.clickable {
    cursor: pointer;
}

.student-separator {
    border: none;
    border-top: 2px solid var(--separator);
    margin: 20px 0;
}


/* États */
.pastille[data-state="white"] { background: #ffffff; }
.pastille[data-state="green"] { background: #00ff00; }
.pastille[data-state="red"]   { background: #ff0000; }

/* -------------------------- alerts ------------------------------ */

.alert {
    grid-column: 1 / span 2;
    padding: 12px 16px;
    border-radius: var(--radius-border);
    margin-top: 15px;
    margin-bottom: 15px;
    font-weight: bold;
    text-align: center;
    border: 1px solid transparent;
}

/* Erreur */
.alert-error {
    background-color: var(--red-bg);
    border-color: var(--red);
    color: var(--red-light);
}

/* Succès */
.alert-success {
    background-color: var(--green-bg);
    border-color: var(--green);
    color: var(--green-light);
}

.error-message {
    color: var(--red-light);
    font-size: 1.4rem;
    font-weight: bold;
    margin-top: 20px;
    text-align: center;
}


/* -------------------------- responsive ------------------------------ */

@media (max-width: 900px) {

    .box {
        flex-direction: column;
        gap: 20px;
    }

    .logo-smartlearn {
        width: 220px;
        height: auto;
    }

    .sidebar {
        width: auto;
        padding: 15px;
    }

    .content {
        width: 100%;
        margin-top: 20px;
    }

    .course-container {
        flex-direction: column;
        gap: 20px;
        padding: 10px;
    }

    .course-list,
    .course-details {
        width: auto;
        padding: 15px;
    }

    .course-info {
        flex-direction: column;
        gap: 15px;
    }

    .course-info p {
        white-space: nowrap;
    }

    .header-user {
        justify-content: space-between;
        padding-right: 10px;
    }

    .user-name {
        font-size: 0.9em;
        word-wrap: break-word;
    }

    .textRight{
        margin-left: 20px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        width: auto;
        max-width: none;
    }

    .form-grid label {
        margin-top: 10px;
    }

    /* Header tablette */
    header {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        text-align: center;
    }

    .menu-right {
        width: 100%;
        justify-content: center; /* centré en tablette */
        margin-bottom: 15px;
    }

    header h1 {
        font-size: 2.2rem;
        margin-bottom: 15px;
    }

    .form-grid input,
    .form-grid textarea,
    .form-grid select {
        width: 100%;
        box-sizing: border-box;
    }

    .form-grid fieldset label {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .form-grid fieldset input[type="checkbox"] {
        width: auto;
        margin: 0;
        flex-shrink: 0;
    }
}

/* -------------------------- mobile très petit ------------------------------ */
@media (max-width: 600px) {

   header {
        flex-direction: column-reverse;
        align-items: center;
        gap: 10px;
        text-align: center;
    }

    .menu-right {
        width: 100%;
        justify-content: center; /* centré en mobile */
        margin-bottom: 15px;
    }

    .btn-about {
        font-size: 14px;
        padding: 8px 14px;
    }

    header h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
}