/**
 * Audio Options Modal Styles
 */

/* ===================================================================
   OVERLAY
   =================================================================== */

.audio-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.audio-modal-overlay--visible {
    opacity: 1;
    visibility: visible;
}

/* ===================================================================
   MODAL
   =================================================================== */

.audio-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    background: white;
    border-radius: 16px;
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.2),
        0 10px 20px rgba(0, 0, 0, 0.1);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.audio-modal--visible {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

/* ===================================================================
   HEADER
   =================================================================== */

.audio-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-gray-100, #F3F4F6);
}

.audio-modal__title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900, #111827);
}

.audio-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--color-gray-500, #6B7280);
    cursor: pointer;
    transition: all 0.2s ease;
}

.audio-modal__close:hover {
    background: var(--color-gray-100, #F3F4F6);
    color: var(--color-gray-700, #374151);
}

/* ===================================================================
   CONTENT
   =================================================================== */

.audio-modal__content {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.audio-modal__intro {
    margin: 0 0 20px;
    font-size: 0.9375rem;
    color: var(--color-gray-600, #4B5563);
    text-align: center;
}

/* ===================================================================
   OPTIONS
   =================================================================== */

.audio-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.audio-option {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--color-gray-50, #F9FAFB);
    border: 1px solid var(--color-gray-200, #E5E7EB);
    border-radius: 12px;
    transition: border-color 0.2s ease;
}

.audio-option:hover {
    border-color: var(--color-gray-300, #D1D5DB);
}

.audio-option__icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.audio-option__info {
    flex: 1;
    min-width: 0;
}

.audio-option__title {
    margin: 0 0 6px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900, #111827);
}

.audio-option__desc {
    margin: 0 0 12px;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-gray-600, #4B5563);
}

.audio-option__features {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.audio-option__features li {
    font-size: 0.75rem;
    color: var(--color-gray-500, #6B7280);
    background: white;
    padding: 4px 10px;
    border-radius: 20px;
    border: 1px solid var(--color-gray-200, #E5E7EB);
}

.audio-option__action {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* ===================================================================
   BUTTONS
   =================================================================== */

.audio-option-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.audio-option-btn--primary {
    background: var(--color-primary-700, #163A6B);
    color: white;
}

.audio-option-btn--primary:hover {
    background: var(--color-primary-800, #0F2B51);
}

/* Toggle Button */
.audio-option-btn--toggle {
    background: var(--color-gray-200, #E5E7EB);
    color: var(--color-gray-600, #4B5563);
    padding: 8px 12px;
    gap: 10px;
}

.audio-option-btn--toggle .toggle-switch {
    position: relative;
    width: 40px;
    height: 22px;
    background: var(--color-gray-300, #D1D5DB);
    border-radius: 11px;
    transition: background 0.2s ease;
}

.audio-option-btn--toggle .toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease;
}

.audio-option-btn--toggle.audio-option-btn--active {
    background: var(--color-primary-100, #E6EBF2);
    color: var(--color-primary-700, #163A6B);
}

.audio-option-btn--toggle.audio-option-btn--active .toggle-switch {
    background: var(--color-primary-600, #2659A0);
}

.audio-option-btn--toggle.audio-option-btn--active .toggle-knob {
    transform: translateX(18px);
}

/* Column Layout for Action Buttons */
.audio-option__action--column {
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
}

/* Begin Reading Button */
.audio-option-btn--begin {
    background: var(--color-primary-600, #2659A0);
    color: white;
    padding: 10px 16px;
    font-weight: 600;
}

.audio-option-btn--begin:hover {
    background: var(--color-primary-700, #163A6B);
}

.audio-option-btn--begin svg {
    fill: currentColor;
    stroke: none;
}

/* Audio Settings Button */
.audio-option-btn--settings {
    background: var(--color-gray-100, #F3F4F6);
    color: var(--color-gray-700, #374151);
    border: 1px solid var(--color-gray-300, #D1D5DB);
    padding: 8px 14px;
    font-weight: 500;
    font-size: 0.8125rem;
}

.audio-option-btn--settings:hover {
    background: var(--color-gray-200, #E5E7EB);
    border-color: var(--color-gray-400, #9CA3AF);
}

.audio-option-btn--settings svg {
    width: 14px;
    height: 14px;
}

/* Hidden Button State */
.audio-option-btn--hidden {
    display: none !important;
}

/* ===================================================================
   FOOTER
   =================================================================== */

.audio-modal__footer {
    padding: 16px 24px;
    border-top: 1px solid var(--color-gray-100, #F3F4F6);
    background: var(--color-gray-50, #F9FAFB);
    text-align: center;
}

.audio-modal__hint {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-gray-500, #6B7280);
}

.audio-hint-icon {
    display: inline-block;
    vertical-align: middle;
}

/* ===================================================================
   SHORT VIEWPORT (small laptops, e.g. 1366×768)
   =================================================================== */

@media (max-height: 800px) {
    .audio-modal {
        max-height: 94vh;
    }

    .audio-modal__header {
        padding: 14px 20px;
    }

    .audio-modal__title {
        font-size: 1.125rem;
    }

    .audio-modal__content {
        padding: 16px 20px;
    }

    .audio-modal__intro {
        margin-bottom: 12px;
        font-size: 0.875rem;
    }

    .audio-options {
        gap: 10px;
    }

    .audio-option {
        padding: 14px;
        gap: 12px;
    }

    .audio-option__icon {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .audio-option__title {
        margin-bottom: 4px;
        font-size: 0.9375rem;
    }

    .audio-option__desc {
        margin-bottom: 8px;
        font-size: 0.8125rem;
    }

    .audio-modal__footer {
        padding: 10px 20px;
    }
}

/* ===================================================================
   MOBILE ADJUSTMENTS
   =================================================================== */

@media (max-width: 640px) {
    .audio-modal {
        width: calc(100% - 32px);
        max-height: calc(100vh - 32px);
    }

    .audio-modal__header {
        padding: 14px 16px;
    }

    .audio-modal__title {
        font-size: 1.125rem;
    }

    .audio-modal__close {
        width: 44px;
        height: 44px;
    }

    .audio-modal__content {
        padding: 16px;
    }

    .audio-modal__intro {
        font-size: 0.8125rem;
        margin-bottom: 14px;
    }

    .audio-options {
        gap: 12px;
    }

    .audio-option {
        flex-direction: row;
        align-items: flex-start;
        gap: 12px;
        padding: 14px;
    }

    .audio-option__icon {
        width: 36px;
        height: 36px;
        font-size: 1.25rem;
        border-radius: 8px;
    }

    .audio-option__title {
        font-size: 0.9375rem;
        margin-bottom: 4px;
    }

    .audio-option__desc {
        font-size: 0.8125rem;
        margin-bottom: 10px;
    }

    .audio-option__action {
        align-self: flex-start;
    }

    .audio-option-btn {
        min-height: 44px;
        padding: 10px 14px;
        font-size: 0.8125rem;
    }

    .audio-modal__footer {
        padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0));
    }

    .audio-modal__hint {
        font-size: 0.75rem;
    }
}

/* Very small screens - bottom sheet style */
@media (max-width: 480px) {
    .audio-modal {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        transform: translateY(100%);
        width: 100%;
        max-width: 100%;
        max-height: 85vh;
        border-radius: 16px 16px 0 0;
    }

    .audio-modal--visible {
        transform: translateY(0);
    }

    .audio-modal__header {
        padding: 12px 14px;
        position: relative;
    }

    /* Visual drag handle */
    .audio-modal__header::before {
        content: '';
        position: absolute;
        top: 6px;
        left: 50%;
        transform: translateX(-50%);
        width: 32px;
        height: 4px;
        background: var(--color-gray-300, #D1D5DB);
        border-radius: 2px;
    }

    .audio-modal__title {
        font-size: 1rem;
        padding-top: 4px;
    }

    .audio-modal__content {
        padding: 12px 14px;
    }

    /* Hide intro text on very small screens */
    .audio-modal__intro {
        display: none;
    }

    .audio-options {
        gap: 10px;
    }

    .audio-option {
        padding: 12px;
        gap: 10px;
    }

    .audio-option__icon {
        width: 32px;
        height: 32px;
        font-size: 1.125rem;
    }

    .audio-option__title {
        font-size: 0.875rem;
    }

    .audio-option__desc {
        font-size: 0.75rem;
        margin-bottom: 8px;
        /* Truncate long descriptions */
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .audio-option-btn {
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .audio-option-btn--toggle {
        padding: 6px 10px;
    }

    .audio-option-btn--toggle .toggle-switch {
        width: 36px;
        height: 20px;
    }

    .audio-option-btn--toggle .toggle-knob {
        width: 16px;
        height: 16px;
    }

    .audio-option-btn--toggle.audio-option-btn--active .toggle-knob {
        transform: translateX(16px);
    }

    .audio-modal__footer {
        padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0));
    }

    .audio-modal__hint {
        font-size: 0.6875rem;
    }
}

/* Extra small screens */
@media (max-width: 375px) {
    .audio-modal__header {
        padding: 10px 12px;
    }

    .audio-modal__content {
        padding: 10px 12px;
    }

    .audio-option {
        padding: 10px;
    }

    .audio-modal__footer {
        padding: 8px 12px calc(8px + env(safe-area-inset-bottom, 0));
    }
}

/* ===================================================================
   REDUCED MOTION
   =================================================================== */

@media (prefers-reduced-motion: reduce) {
    .audio-modal {
        transition: opacity 0.1s ease;
        transform: translate(-50%, -50%);
    }

    .audio-modal--visible {
        transform: translate(-50%, -50%);
    }

    .audio-option-btn--toggle .toggle-knob {
        transition: none;
    }
}

/* Reduced motion + bottom sheet */
@media (prefers-reduced-motion: reduce) and (max-width: 480px) {
    .audio-modal {
        transform: translateY(0);
    }

    .audio-modal--visible {
        transform: translateY(0);
    }
}

/* ===================================================================
   DARK MODE
   =================================================================== */

@media (prefers-color-scheme: dark) {
    .audio-modal {
        background: var(--color-gray-800, #1F2937);
    }

    .audio-modal__header {
        border-color: var(--color-gray-700, #374151);
    }

    .audio-modal__title {
        color: white;
    }

    .audio-modal__close {
        color: var(--color-gray-400, #9CA3AF);
    }

    .audio-modal__close:hover {
        background: var(--color-gray-700, #374151);
        color: white;
    }

    .audio-modal__intro {
        color: var(--color-gray-400, #9CA3AF);
    }

    .audio-option {
        background: var(--color-gray-900, #111827);
        border-color: var(--color-gray-700, #374151);
    }

    .audio-option:hover {
        border-color: var(--color-gray-600, #4B5563);
    }

    .audio-option__icon {
        background: var(--color-gray-800, #1F2937);
    }

    .audio-option__title {
        color: white;
    }

    .audio-option__desc {
        color: var(--color-gray-400, #9CA3AF);
    }

    .audio-option__features li {
        background: var(--color-gray-800, #1F2937);
        border-color: var(--color-gray-700, #374151);
        color: var(--color-gray-400, #9CA3AF);
    }

    .audio-option-btn--toggle {
        background: var(--color-gray-700, #374151);
        color: var(--color-gray-300, #D1D5DB);
    }

    .audio-option-btn--toggle .toggle-switch {
        background: var(--color-gray-600, #4B5563);
    }

    .audio-option-btn--toggle.audio-option-btn--active {
        background: var(--color-primary-900, #0A1F3D);
        color: var(--color-primary-300, #9BB4D2);
    }

    .audio-option-btn--begin {
        background: var(--color-primary-500, #3B7DD8);
    }

    .audio-option-btn--begin:hover {
        background: var(--color-primary-400, #5A94E5);
    }

    .audio-option-btn--settings {
        background: var(--color-gray-700, #374151);
        color: var(--color-gray-300, #D1D5DB);
        border-color: var(--color-gray-600, #4B5563);
    }

    .audio-option-btn--settings:hover {
        background: var(--color-gray-600, #4B5563);
        border-color: var(--color-gray-500, #6B7280);
    }

    .audio-modal__footer {
        background: var(--color-gray-900, #111827);
        border-color: var(--color-gray-700, #374151);
    }

    .audio-modal__hint {
        color: var(--color-gray-500, #6B7280);
    }
}