/* style.css - Version optimisée */

/* --- Variables CSS --- */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --background-color-light: #f8f9fa;
    --card-background-light: #ffffff;
    --text-color-light: #343a40;
    --border-color-light: #dee2e6;
    --hover-color-light: #0056b3;
    --shadow-color-light: rgba(0, 0, 0, 0.1);

    --header-gradient-light: linear-gradient(135deg, #007bff, #0056b3);
    --button-primary-gradient-light: linear-gradient(45deg, #007bff, #0056b3);
    --button-secondary-gradient-light: linear-gradient(45deg, #6c757d, #5a6268);
    --button-add-gradient-light: linear-gradient(45deg, #28a745, #218838);
    --button-calculate-gradient-light: linear-gradient(45deg, #17a2b8, #138496);
    --button-download-gradient-light: linear-gradient(45deg, #ffc107, #e0a800);
}

body.dark-theme {
    --primary-color: #66b3ff;
    --secondary-color: #adb5bd;
    --accent-color: #2fb94c;
    --background-color-dark: #2c3e50;
    --card-background-dark: #34495e;
    --text-color-dark: #ecf0f1;
    --border-color-dark: #495057;
    --hover-color-dark: #4da6ff;
    --shadow-color-dark: rgba(0, 0, 0, 0.3);

    --header-gradient-dark: linear-gradient(135deg, #34495e, #2c3e50);
    --button-primary-gradient-dark: linear-gradient(45deg, #66b3ff, #4da6ff);
    --button-secondary-gradient-dark: linear-gradient(45deg, #adb5bd, #9ca6b0);
    --button-add-gradient-dark: linear-gradient(45deg, #2fb94c, #269c41);
    --button-calculate-gradient-dark: linear-gradient(45deg, #22b8ce, #1ea3b3);
    --button-download-gradient-dark: linear-gradient(45deg, #ffd700, #c7a200);
}

/* --- Styles Généraux --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.4s ease, color 0.4s ease;
}

body.dark-theme {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header --- */
header {
    background: var(--header-gradient-light);
    color: white;
    padding: 20px 0;
    text-align: center;
    box-shadow: 0 4px 8px var(--shadow-color-light);
    position: relative;
    margin-bottom: 30px;
}

body.dark-theme header {
    background: var(--header-gradient-dark);
    box-shadow: 0 4px 8px var(--shadow-color-dark);
}

header h1 {
    margin-bottom: 5px;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

header p {
    font-size: 1.1em;
    opacity: 0.9;
}

/* --- Contrôles du Header --- */
.header-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
}

.theme-toggle, .language-toggle {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: white;
    padding: 8px 12px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover, .language-toggle:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

.theme-toggle .icon-light,
.theme-toggle .icon-dark {
    font-size: 1.2em;
    line-height: 1;
}

.theme-toggle .icon-dark {
    display: none;
}

body.dark-theme .theme-toggle .icon-dark {
    display: inline-block;
}

body.dark-theme .theme-toggle .icon-light {
    display: none;
}

/* --- Main content & Cards --- */
main {
    flex-grow: 1;
    padding: 20px 0;
}

.card {
    background-color: var(--card-background-light);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 6px 12px var(--shadow-color-light);
    transition: background-color 0.4s ease, color 0.4s ease, box-shadow 0.3s ease;
}

body.dark-theme .card {
    background-color: var(--card-background-dark);
    box-shadow: 0 6px 12px var(--shadow-color-dark);
}

.card h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.8em;
    text-align: center;
}

.card p.description {
    text-align: center;
    margin-bottom: 25px;
    color: var(--secondary-color);
    font-size: 1.1em;
}

/* --- Boutons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: bold;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn .icon {
    margin-right: 8px;
    font-size: 1.2em;
}

.btn:hover {
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
    transform: translateY(-2px);
}

.btn.primary {
    background: var(--button-primary-gradient-light);
}
body.dark-theme .btn.primary {
    background: var(--button-primary-gradient-dark);
}

.btn.secondary {
    background: var(--button-secondary-gradient-light);
}
body.dark-theme .btn.secondary {
    background: var(--button-secondary-gradient-dark);
}

.btn.add-btn {
    background: var(--button-add-gradient-light);
}
body.dark-theme .btn.add-btn {
    background: var(--button-add-gradient-dark);
}

.btn.calculate-btn {
    background: var(--button-calculate-gradient-light);
    width: 100%;
    margin-top: 25px;
}
body.dark-theme .btn.calculate-btn {
    background: var(--button-calculate-gradient-dark);
}

.btn.download-btn {
    background: var(--button-download-gradient-light);
}
body.dark-theme .btn.download-btn {
    background: var(--button-download-gradient-dark);
}

.btn.back-btn {
    background-color: var(--secondary-color);
    margin-top: 30px;
}
body.dark-theme .btn.back-btn {
    background-color: var(--secondary-color);
}

/* --- Formulaires --- */
form {
    margin-top: 20px;
}

.mode-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
    align-items: center;
}

@media (min-width: 600px) {
    .mode-options {
        flex-direction: row;
        justify-content: center;
    }
}

.mode-options .btn {
    width: 100%;
    max-width: 300px;
    font-size: 1.2em;
    padding: 20px;
}

.entry-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.entry-row label {
    flex-basis: 100%;
    font-weight: bold;
    margin-bottom: 5px;
}

.entry-row .input-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 120px;
    position: relative; /* Ajouté pour positionner le grade-display */
}

.entry-row input[type="text"],
.entry-row input[type="number"],
.text-input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color-light);
    border-radius: 5px;
    font-size: 1em;
    background-color: var(--card-background-light);
    color: var(--text-color-light);
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.entry-row input:focus,
.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

body.dark-theme .entry-row input,
body.dark-theme .text-input {
    background-color: var(--background-color-dark);
    border-color: var(--border-color-dark);
    color: var(--text-color-dark);
}

body.dark-theme .entry-row input:focus,
body.dark-theme .text-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 179, 255, 0.25);
}

/* Styles pour l'affichage du grade en temps réel dans les champs d'entrée */
.grade-display {
    position: absolute;
    right: 5px; /* Ajustez selon le padding de l'input */
    top: calc(50% + 5px); /* Positionne le long de l'input */
    transform: translateY(-50%);
    font-size: 0.8em;
    color: var(--primary-color);
    font-weight: bold;
    pointer-events: none; /* Permet de cliquer à travers le span */
    background-color: var(--card-background-light); /* Pour éviter que le texte de l'input ne passe dessous */
    padding: 0 5px;
    border-radius: 3px;
}

body.dark-theme .grade-display {
    background-color: var(--background-color-dark);
    color: var(--primary-color); /* Utilise la couleur primaire du dark theme */
}


/* --- Tooltips et erreurs --- */
.remove-entry-btn {
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    font-size: 1.8em;
    padding: 5px;
    transition: color 0.3s ease, transform 0.2s ease;
    flex-shrink: 0;
    position: relative;
}

.remove-entry-btn:hover {
    color: #c82333;
    transform: scale(1.1);
}

body.dark-theme .remove-entry-btn {
    color: #ff6b6b;
}

body.dark-theme .remove-entry-btn:hover {
    color: #ff4d4d;
}

.remove-entry-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
}

.remove-entry-btn:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 5px);
}

.error-message {
    color: #dc3545;
    font-size: 0.85em;
    margin-top: 5px;
    display: none;
}

.entry-row .input-group.invalid input {
    border-color: #dc3545;
}

/* --- Résultats --- */
#calculationResult {
    background-color: #e2f0fe;
    border: 1px solid #cce5ff;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
    font-size: 1.2em;
    color: #004085;
    animation: fadeIn 0.5s ease-out;
}

body.dark-theme #calculationResult {
    background-color: rgba(102, 179, 255, 0.1);
    border-color: rgba(102, 179, 255, 0.3);
    color: #66b3ff;
}

#calculationResult .result-value {
    font-size: 2.2em;
    font-weight: bold;
    color: var(--accent-color);
    margin-top: 15px;
    text-shadow: 1px 1px 3px rgba(0, 123, 255, 0.2);
}

body.dark-theme #calculationResult .result-value {
    color: var(--accent-color);
    text-shadow: 1px 1px 3px rgba(102, 179, 255, 0.2);
}

#calculationResult .mention {
    font-size: 1.5em;
    font-weight: bold;
    margin-top: 10px;
    color: var(--primary-color);
}

/* Styles pour l'affichage du nom de l'utilisateur temporaire lors du téléchargement */
.user-name-display {
    font-size: 1.3em;
    font-weight: bold;
    margin-top: 10px;
    margin-bottom: 15px; /* Pour un peu d'espace avec le résultat */
    text-align: center;
    color: var(--text-color-light); /* Couleur par défaut */
}

body.dark-theme .user-name-display {
    color: var(--text-color-dark);
}

/* --- Tableau des notes --- */
#gradesTableContainer {
    margin-top: 30px;
    overflow-x: auto;
    animation: fadeIn 0.7s ease-out;
}

#gradesTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background-color: var(--card-background-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px var(--shadow-color-light);
}

body.dark-theme #gradesTable {
    background-color: var(--card-background-dark);
}

#gradesTable th, #gradesTable td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color-light);
}

body.dark-theme #gradesTable th, 
body.dark-theme #gradesTable td {
    border-bottom: 1px solid var(--border-color-dark);
}

#gradesTable th {
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9em;
}

#gradesTable tbody tr:nth-child(even) {
    background-color: var(--background-color-light);
}

body.dark-theme #gradesTable tbody tr:nth-child(even) {
    background-color: var(--background-color-dark);
}

#gradesTable tbody tr:hover {
    background-color: #e9ecef;
    cursor: pointer;
}

body.dark-theme #gradesTable tbody tr:hover {
    background-color: #495e71;
}

/* Classe pour masquer les colonnes de grade - Contrôlée par JS */
.hidden-column {
    display: none !important;
}

/* --- Actions des résultats --- */
.result-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
    align-items: center;
}

@media (min-width: 600px) {
    .result-actions {
        flex-direction: row;
        justify-content: center;
    }
}

.text-input {
    min-width: 200px;
}

/* --- Footer --- */
footer {
    background-color: var(--text-color-light);
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 30px;
    font-size: 0.9em;
}

body.dark-theme footer {
    background-color: var(--background-color-dark);
}

/* --- Utilitaires --- */
.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card.active {
    animation: fadeIn 0.5s ease-out;
}

/* --- Barre de progression --- */
.progress-bar-container {
    width: 100%;
    background-color: var(--border-color-light);
    border-radius: 10px;
    height: 10px;
    overflow: hidden;
    margin-bottom: 15px;
}

body.dark-theme .progress-bar-container {
    background-color: var(--border-color-dark);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    width: 0%;
    border-radius: 10px;
    transition: width 0.5s ease-in-out;
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    position: relative;
    padding: 0 10px;
}

.progress-steps .step {
    flex: 1;
    text-align: center;
    font-weight: bold;
    color: var(--secondary-color);
    position: relative;
    padding-top: 5px;
    font-size: 0.9em;
}

.progress-steps .step.active {
    color: var(--primary-color);
}

.progress-steps .step::before {
    content: '';
    display: block;
    width: 12px;
    height: 12px;
    background-color: var(--border-color-light);
    border-radius: 50%;
    border: 2px solid var(--border-color-light);
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.progress-steps .step.active::before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* --- Conteneurs d'entrées --- */
.entries-container {
    margin-bottom: 20px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .theme-toggle {
        position: static;
        margin: 15px auto 0;
        width: fit-content;
    }

    .card {
        padding: 20px;
    }

    .mode-options .btn {
        font-size: 1.1em;
        padding: 15px;
    }

    .entry-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .entry-row .input-group {
        width: 100%;
        min-width: unset;
    }
    
    .remove-entry-btn {
        align-self: flex-end;
    }

    .result-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .text-input {
        width: 100%;
    }
    
    .header-controls {
        position: static;
        justify-content: center;
        margin-top: 15px;
    }
}

@media (max-width: 600px) {
    .header-controls {
        flex-direction: column;
        align-items: center;
    }
}