/**
 * Styles pour les boutons
 * Définit des styles améliorés pour tous les boutons du site
 */

/* Style de base pour tous les boutons */
.btn,
button[type="button"],
button[type="submit"],
input[type="button"],
input[type="submit"],
.calculator-button,
.todo-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-duration) var(--ease-out-back);
    user-select: none;
    overflow: hidden;
    gap: var(--spacing-sm);
    line-height: 1.5;
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* État au survol pour tous les boutons */
.btn:hover,
button[type="button"]:hover,
button[type="submit"]:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
.calculator-button:hover,
.todo-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* État actif pour tous les boutons */
.btn:active,
button[type="button"]:active,
button[type="submit"]:active,
input[type="button"]:active,
input[type="submit"]:active,
.calculator-button:active,
.todo-button:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* État focus pour tous les boutons */
.btn:focus,
button[type="button"]:focus,
button[type="submit"]:focus,
input[type="button"]:focus,
input[type="submit"]:focus,
.calculator-button:focus,
.todo-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.25);
}

/* Effet de ripple au clic */
.btn::after,
button[type="button"]::after,
button[type="submit"]::after,
input[type="button"]::after,
input[type="submit"]::after,
.calculator-button::after,
.todo-button::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.3) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 0.8s;
}

.btn:active::after,
button[type="button"]:active::after,
button[type="submit"]:active::after,
input[type="button"]:active::after,
input[type="submit"]:active::after,
.calculator-button:active::after,
.todo-button:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}

/* Variantes de boutons */

/* Bouton par défaut */
.btn,
button[type="button"],
button[type="submit"],
input[type="button"],
input[type="submit"] {
    color: var(--text-color);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
}

.btn:hover,
button[type="button"]:hover,
button[type="submit"]:hover,
input[type="button"]:hover,
input[type="submit"]:hover {
    background-color: var(--hover-color);
    border-color: var(--primary-color);
}

/* Bouton primaire */
.btn-primary,
.btn.primary,
.todo-button.primary,
.calculator-button.primary {
    color: var(--text-on-primary);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color) 70%, var(--primary-color-hover, #0D93F0));
    border-color: var(--primary-color);
}

.btn-primary:hover,
.btn.primary:hover,
.todo-button.primary:hover,
.calculator-button.primary:hover {
    background: linear-gradient(135deg, var(--primary-color-hover, #0D93F0), var(--primary-color));
    box-shadow: 0 5px 15px rgba(var(--primary-color-rgb), 0.4);
}

/* Bouton secondaire */
.btn-secondary,
.btn.secondary,
.todo-button.secondary,
.calculator-button.secondary {
    color: var(--text-on-primary);
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-color) 70%, var(--secondary-color-dark, #43A047));
    border-color: var(--secondary-color);
}

.btn-secondary:hover,
.btn.secondary:hover,
.todo-button.secondary:hover,
.calculator-button.secondary:hover {
    background: linear-gradient(135deg, var(--secondary-color-dark, #43A047), var(--secondary-color));
    box-shadow: 0 5px 15px rgba(var(--secondary-color-rgb), 0.4);
}

/* Bouton danger / suppression */
.btn-danger,
.btn.danger,
.btn.delete-all,
.todo-button.delete-all,
.calculator-button.clear {
    color: var(--text-on-primary);
    background: linear-gradient(135deg, var(--error-color), var(--error-color) 70%, var(--danger-color-hover, #E53935));
    border-color: var(--error-color);
}

.btn-danger:hover,
.btn.danger:hover,
.btn.delete-all:hover,
.todo-button.delete-all:hover,
.calculator-button.clear:hover {
    background: linear-gradient(135deg, var(--danger-color-hover, #E53935), var(--error-color));
    box-shadow: 0 5px 15px rgba(244, 67, 54, 0.4);
}

/* Bouton opérateur (calculatrice) */
.calculator-button.operator {
    background: linear-gradient(to bottom, var(--calc-button-operator), var(--calc-button-operator-hover, #D4E6FC));
    color: var(--primary-color);
    border-color: var(--calc-button-operator-hover, #D4E6FC);
    font-weight: 600;
}

.calculator-button.operator:hover {
    background: linear-gradient(to bottom, var(--calc-button-operator-hover, #D4E6FC), var(--calc-button-operator));
}

/* Bouton égal (calculatrice) */
.calculator-button.equals {
    background: linear-gradient(135deg, var(--calc-button-equals), var(--calc-button-equals) 60%, var(--primary-color-hover, #0D93F0));
    color: var(--text-on-primary);
    border-color: var(--calc-button-equals);
    font-weight: 600;
}

.calculator-button.equals:hover {
    background: linear-gradient(135deg, #0D93F0, var(--calc-button-equals));
    box-shadow: 0 5px 15px rgba(14, 156, 255, 0.4);
}

/* Bouton fantôme / transparent */
.btn-ghost,
.btn.ghost,
.calculator-help-toggle,
.todo-action-button {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: transparent;
    box-shadow: none;
}

.btn-ghost:hover,
.btn.ghost:hover,
.calculator-help-toggle:hover,
.todo-action-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
    transform: translateY(0);
    box-shadow: none;
}

/* Bouton icône */
.btn-icon,
.btn.icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.btn-icon:hover,
.btn.icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.btn-icon i,
.btn.icon i {
    font-size: 1.2rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* Bouton avec icône + texte */
.btn i, 
.todo-button i,
button[type="button"] i, 
button[type="submit"] i {
    margin-right: var(--spacing-sm);
    font-size: 1.1em;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tailles de bouton */
.btn-sm,
.btn.sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    border-radius: var(--border-radius-sm);
}

.btn-lg,
.btn.lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-md);
}

/* Bouton désactivé */
.btn:disabled,
button[type="button"]:disabled,
button[type="submit"]:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
.calculator-button:disabled,
.todo-button:disabled {
    opacity: 0.65;
    pointer-events: none;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Bouton avec badge */
.btn-badge {
    position: relative;
}

.btn-badge::before {
    content: attr(data-count);
    position: absolute;
    top: -8px;
    right: -8px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: var(--font-size-xs);
    font-weight: bold;
    line-height: 18px;
    border-radius: 9px;
    background-color: var(--error-color);
    color: white;
    text-align: center;
}

/* Bouton pleine largeur */
.btn-block,
.btn.block {
    display: block;
    width: 100%;
}

/* Groupe de boutons */
.btn-group {
    display: inline-flex;
    align-items: center;
}

.btn-group .btn {
    border-radius: 0;
    margin-right: -1px;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    margin-right: 0;
}

/* Effet d'ombre sur les boutons calculatrice */
.calculator-button {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.calculator-button:hover {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

/* Thème sombre */
[data-theme="dark"] .btn,
[data-theme="dark"] button[type="button"],
[data-theme="dark"] button[type="submit"],
[data-theme="dark"] input[type="button"],
[data-theme="dark"] input[type="submit"] {
    background-color: var(--button-bg);
    color: var(--button-text);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn:hover,
[data-theme="dark"] button[type="button"]:hover,
[data-theme="dark"] button[type="submit"]:hover,
[data-theme="dark"] input[type="button"]:hover,
[data-theme="dark"] input[type="submit"]:hover {
    background-color: var(--button-hover-bg);
    border-color: var(--primary-color);
}

[data-theme="dark"] .btn-ghost:hover,
[data-theme="dark"] .btn.ghost:hover,
[data-theme="dark"] .calculator-help-toggle:hover,
[data-theme="dark"] .todo-action-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .btn-icon:hover,
[data-theme="dark"] .btn.icon:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .btn::after,
[data-theme="dark"] button[type="button"]::after,
[data-theme="dark"] button[type="submit"]::after,
[data-theme="dark"] input[type="button"]::after,
[data-theme="dark"] input[type="submit"]::after,
[data-theme="dark"] .calculator-button::after,
[data-theme="dark"] .todo-button::after {
    background-image: radial-gradient(circle, rgba(0, 0, 0, 0.3) 10%, transparent 10.01%);
}

[data-theme="dark"] .calculator-button.operator {
    background: linear-gradient(to bottom, var(--calc-button-operator), rgba(40, 40, 40, 0.8));
    color: var(--primary-color);
    border-color: rgba(40, 40, 40, 0.8);
}

[data-theme="dark"] .calculator-button.equals {
    background: linear-gradient(135deg, var(--calc-button-equals), var(--calc-button-equals) 60%, var(--primary-hover));
}

[data-theme="dark"] .calculator-button.equals:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--calc-button-equals));
}

[data-theme="dark"] .fullscreen-btn-error {
    border: 1px solid var(--error-color) !important;
    background-color: rgba(220, 53, 69, 0.2) !important;
    color: var(--error-color) !important;
}

/* Adaptation mobile */
@media (max-width: 480px) {
    .btn,
    button[type="button"],
    button[type="submit"],
    input[type="button"],
    input[type="submit"],
    .calculator-button:not(.calculator-button.equals),
    .todo-button {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .btn-group {
        flex-wrap: wrap;
    }
    
    .btn-group .btn {
        margin-bottom: var(--spacing-xs);
    }
}

/* Classe pour indiquer une erreur sur le bouton de plein écran */
.fullscreen-btn-error {
    animation: fullscreen-btn-shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    perspective: 1000px;
    border: 1px solid var(--color-danger) !important;
    background-color: rgba(220, 53, 69, 0.1) !important;
    color: var(--color-danger) !important;
}

/* Animation de secousse pour indiquer une erreur */
@keyframes fullscreen-btn-shake {
    10%, 90% {
        transform: translate3d(-1px, 0, 0);
    }
    
    20%, 80% {
        transform: translate3d(2px, 0, 0);
    }
    
    30%, 50%, 70% {
        transform: translate3d(-3px, 0, 0);
    }
    
    40%, 60% {
        transform: translate3d(3px, 0, 0);
    }
}