/* ===== BLOCK: button ===== */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    outline: none;
    position: relative;
    gap: 0.5rem;
    text-decoration: none;
    box-sizing: border-box;
    font-family: inherit;
    line-height: 1.5;
}

/* ===== ELEMENTS ===== */
.button__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.button__icon--loading {
    animation: button-spin 1s linear infinite;
}

.button__text {
    display: inline;
    font: inherit;
    white-space: nowrap;
}

/* ===== MODIFIERS: Tamaños ===== */
.button--xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    min-height: 24px;
    gap: 0.25rem;
}

.button--small {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    min-height: 32px;
    gap: 0.375rem;
}

.button--medium {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    min-height: 40px;
    gap: 0.5rem;
}

.button--large {
    padding: 1rem 1.5rem;
    font-size: 1.125rem;
    min-height: 48px;
    gap: 0.625rem;
}

.button--xlarge {
    padding: 1.25rem 2rem;
    font-size: 1.25rem;
    min-height: 56px;
    gap: 0.75rem;
}

.button--game {
    padding: 0.9375rem 1rem;
    font-size: 1rem;
    min-height: 50px;
    gap: 0.5rem;
}

/* ===== MODIFIERS: Layout ===== */
.button--full {
    width: 100%;
    justify-content: center;
}

.button--with-icon {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

/* ===== MODIFIERS: Variantes ===== */

/* Primary - Plano y sólido */
.button--primary {
    background-color: #2563eb;
    color: #ffffff;
    border: 1px solid transparent;
}

.button--primary:hover {
    background-color: #1d4ed8;
}

.button--primary:focus {
    background-color: #1d4ed8;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.button--primary:active {
    background-color: #1e40af;
}

/* Gradient - Con degradado y sombra */
.button--gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.2), 0 2px 4px rgba(0, 0, 0, 0.05);
}

.button--gradient:hover {
    background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25), 0 3px 6px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.button--gradient:focus {
    background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25), 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.button--gradient:active {
    background: linear-gradient(135deg, #1e40af 0%, #3730a3 100%);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
    transform: translateY(0);
}

/* Secondary */
.button--secondary {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
    color: #ffffff;
    border: 1px solid transparent;
}

.button--secondary:hover {
    background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
}

.button--secondary:focus {
    background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
    box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.3);
}

/* Success */
.button--success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    border: 1px solid transparent;
}

.button--success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

.button--success:focus {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
}

/* Danger */
.button--danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
    border: 1px solid transparent;
}

.button--danger:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.button--danger:focus {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

/* Warning */
.button--warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #ffffff;
    border: 1px solid transparent;
}

.button--warning:hover {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
}

.button--warning:focus {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

/* Outline */
.button--outline {
    background-color: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.button--outline:hover {
    background-color: #2563eb;
    color: #ffffff;
}

.button--outline:focus {
    background-color: #2563eb;
    color: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

/* Ghost */
.button--ghost {
    background-color: transparent;
    color: #2563eb;
    border: 1px solid transparent;
}

.button--ghost:hover {
    background-color: rgba(37, 99, 235, 0.1);
}

.button--ghost:focus {
    background-color: rgba(37, 99, 235, 0.1);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

/* ===== VARIANTES DE JUEGO ===== */

/* Game Reveal */
.button--gameReveal {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    color: #195b81;
    border: 2px solid #195b81;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 8px rgba(25, 91, 129, 0.15);
    border-radius: 0.625rem;
}

.button--gameReveal:hover {
    background: linear-gradient(145deg, #f1f5f9 0%, #e2e8f0 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(25, 91, 129, 0.2);
}

.button--gameReveal:focus {
    box-shadow: 0 4px 12px rgba(25, 91, 129, 0.2), 0 0 0 3px rgba(25, 91, 129, 0.3);
}

/* Game Correct */
.button--gameCorrect {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    border: 1px solid transparent;
    border-radius: 0.625rem;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    animation: correctPulse 0.6s ease-out;
}

.button--gameCorrect:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px) scale(1.02);
}

/* Game Incorrect */
.button--gameIncorrect {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
    border: 1px solid transparent;
    border-radius: 0.625rem;
    animation: incorrectShake 0.6s ease-out;
}

.button--gameIncorrect:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    animation: shake 0.3s ease-in-out infinite;
}

/* Game Restart */
.button--gameRestart {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.button--gameRestart:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px) scale(1.02);
}

/* Game Exit */
.button--gameExit {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.button--gameExit:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px) scale(1.02);
}

/* ===== MODIFIERS: Estados ===== */

.button--disabled,
.button[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
}

.button--loading {
    cursor: wait;
    pointer-events: none;
}

/* ===== ANIMACIONES ===== */

@keyframes button-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes correctPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes incorrectShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-2px); }
    20%, 40%, 60%, 80% { transform: translateX(2px); }
}

/* ===== POSICIONES DE ICONOS ===== */

.button--icon-top {
    flex-direction: column;
    gap: 0.25rem;
}

.button--icon-bottom {
    flex-direction: column-reverse;
    gap: 0.25rem;
}

.button--icon-left {
    flex-direction: row;
}

.button--icon-right {
    flex-direction: row-reverse;
}

/* ===== MODO OSCURO ===== */

[data-theme="dark"] .button--primary {
    background-color: #1e40af;
    color: #e5e7eb;
}

[data-theme="dark"] .button--primary:hover {
    background-color: #1e3a8a;
}

[data-theme="dark"] .button--gradient {
    background: linear-gradient(135deg, #1e40af 0%, #4338ca 100%);
    color: #e5e7eb;
}

[data-theme="dark"] .button--gradient:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #3730a3 100%);
}

[data-theme="dark"] .button--secondary {
    background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
    color: #e5e7eb;
}

[data-theme="dark"] .button--outline {
    color: #60a5fa;
    border-color: #60a5fa;
}

[data-theme="dark"] .button--outline:hover {
    background-color: #60a5fa;
    color: #111827;
}

[data-theme="dark"] .button--ghost {
    color: #60a5fa;
}

[data-theme="dark"] .button--ghost:hover {
    background-color: rgba(96, 165, 250, 0.1);
}

[data-theme="dark"] .button--gameReveal {
    background: linear-gradient(145deg, #1f2937 0%, #374151 100%);
    color: #60a5fa;
    border-color: #60a5fa;
}

[data-theme="dark"] .button--gameReveal:hover {
    background: linear-gradient(145deg, #374151 0%, #4b5563 100%);
}

/* ===== ACCESIBILIDAD ===== */

.button:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .button,
    .button__icon--loading,
    .button--gameCorrect,
    .button--gameIncorrect {
        animation: none !important;
        transition: none !important;
    }

    .button:hover {
        transform: none !important;
    }
}

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

@media (max-width: 640px) {
    .button {
        min-height: 44px;
    }

    .button--large,
    .button--xlarge {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .button--full {
        width: 100%;
    }
}

/* ===== HIGH CONTRAST ===== */

@media (prefers-contrast: high) {
    .button {
        border-width: 2px;
    }

    .button:focus-visible {
        outline-width: 3px;
        outline-offset: 3px;
    }
}

/* ===== PRINT STYLES ===== */

@media print {
    .button {
        background: white !important;
        color: black !important;
        border: 1px solid black !important;
        box-shadow: none !important;
        transform: none !important;
    }
}