/* ===========================================
   Letters Feature Styles
   =========================================== */

/* Page Container */
.letters-container {
    flex: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 24px 16px;
    width: 100%;
}

/* Create Letter Card (Dashed Border) */
.create-letter-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px;
    border: 2px dashed var(--primary);
    border-radius: 16px;
    background: white;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: background 0.2s, border-color 0.2s;
    margin-bottom: 16px;
}

.create-letter-card:hover {
    background: var(--primary-soft);
    border-color: var(--primary-dark);
}

.create-letter-card .mdi {
    font-size: 20px;
}

/* Letters Tabs */
.letters-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: white;
    border-radius: 12px;
    padding: 6px;
    border: 1px solid var(--border);
}

.letters-tab {
    flex: 1;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
}

.letters-tab:hover {
    color: var(--text);
    background: var(--background);
}

.letters-tab.active {
    background: var(--primary);
    color: white;
}

.letters-tab .tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    margin-left: 6px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}

.letters-tab.active .tab-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Letters Section */
.letters-section {
    margin-bottom: 32px;
}

.letters-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.letters-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.letters-section-count {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--background);
    padding: 2px 8px;
    border-radius: 10px;
}

/* Letter Card */
.letter-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.letter-card:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.letter-card-envelope {
    width: 48px;
    height: 48px;
    background: var(--primary-soft);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.letter-card-envelope .mdi {
    font-size: 24px;
    color: var(--primary);
}

.letter-card-envelope.sealed {
    background: #E5E7EB;
}

.letter-card-envelope.sealed .mdi {
    color: #6B7280;
}

.letter-card-envelope.ready {
    background: #D1FAE5;
}

.letter-card-envelope.ready .mdi {
    color: #059669;
}

.letter-card-envelope.opened {
    background: #DBEAFE;
}

.letter-card-envelope.opened .mdi {
    color: #2563EB;
}

.letter-card-content {
    flex: 1;
    min-width: 0;
}

.letter-card-person {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.letter-card-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.letter-card-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.letter-card-avatar .avatar-initials {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.letter-card-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}

.letter-card-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}

.letter-card-meta .mdi {
    font-size: 16px;
    margin-right: 4px;
}

.letter-card-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

/* Status Badge */
.letter-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.letter-status-badge.editable {
    background: #FFF7ED;
    color: #EA580C;
}

.letter-status-badge.sealed {
    background: #F3F4F6;
    color: #6B7280;
}

.letter-status-badge.waiting {
    background: #F3F4F6;
    color: #6B7280;
}

.letter-status-badge.ready {
    background: #D1FAE5;
    color: #059669;
}

.letter-status-badge.opened {
    background: #DBEAFE;
    color: #2563EB;
}

/* Edit Window Countdown */
.edit-countdown {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #EA580C;
}

.edit-countdown .mdi {
    font-size: 14px;
}

/* Letters Empty State */
.letters-empty {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.letters-empty .mdi {
    font-size: 64px;
    color: var(--text-light);
    margin-bottom: 16px;
}

.letters-empty-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 8px 0;
}

.letters-empty-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* ===========================================
   Letter Form Styles
   =========================================== */

.letter-form-container {
    max-width: 700px;
    margin: 24px auto;
    padding: 24px;
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.letter-form-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 24px 0;
}

/* Edit Window Warning */
.edit-window-warning {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: #FFF7ED;
    border: 1px solid #FDBA74;
    border-radius: 12px;
    margin-bottom: 24px;
}

.edit-window-warning .mdi {
    font-size: 24px;
    color: #EA580C;
}

.edit-window-info {
    flex: 1;
}

.edit-window-title {
    font-size: 14px;
    font-weight: 600;
    color: #EA580C;
    margin: 0 0 4px 0;
}

.edit-window-time {
    font-size: 13px;
    color: #C2410C;
    margin: 0;
}

/* Recipient Selector */
.recipient-section {
    margin-bottom: 24px;
}

.recipient-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.recipient-label .mdi {
    font-size: 20px;
    color: var(--primary);
}

.recipient-select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    background: white;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s;
}

.recipient-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Letter Body Input */
.letter-body-section {
    margin-bottom: 24px;
}

.letter-body-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.letter-body-label .mdi {
    font-size: 20px;
    color: var(--primary);
}

.letter-body-input {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.letter-body-input:focus {
    outline: none;
    border-color: var(--primary);
}

.letter-body-input::placeholder {
    color: var(--text-light);
}

/* Writing Prompts */
.prompts-section {
    margin-top: 12px;
}

.prompts-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--background);
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.prompts-toggle:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.prompts-list {
    display: none;
    margin-top: 12px;
    padding: 16px;
    background: var(--background);
    border-radius: 12px;
}

.prompts-list.show {
    display: block;
}

.prompts-list-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0 0 12px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.prompt-item {
    display: block;
    padding: 10px 14px;
    margin-bottom: 8px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    width: 100%;
}

.prompt-item:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.prompt-item:last-child {
    margin-bottom: 0;
}

/* Unlock Date Section */
.unlock-date-section {
    margin-bottom: 24px;
}

.unlock-date-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.unlock-date-label .mdi {
    font-size: 20px;
    color: var(--primary);
}

.unlock-date-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    background: white;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s;
}

.unlock-date-input:focus {
    outline: none;
    border-color: var(--primary);
}

.unlock-date-hint {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.unlock-date-hint .mdi {
    color: var(--primary);
}

/* Photo Upload Section */
.photo-upload-section {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--background);
    border-radius: 12px;
}

.photo-upload-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.photo-upload-label:hover {
    background: var(--primary-dark);
}

.photo-upload-input {
    display: none;
}

.photo-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.photo-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    background: var(--background);
}

.photo-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.remove-photo-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.remove-photo-btn:hover {
    background: rgba(220, 38, 38, 0.9);
}

.photo-upload-hint {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Existing Photos */
.existing-photos-section {
    margin-bottom: 24px;
}

.existing-photos-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.existing-photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
}

.existing-photo-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border);
    transition: opacity 0.2s, border-color 0.2s;
}

.existing-photo-item.marked-for-removal {
    opacity: 0.4;
    border-color: #DC2626;
}

.existing-photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Submit Button */
.letter-submit-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.letter-submit-btn:hover {
    background: var(--primary-dark);
}

.letter-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===========================================
   Letter Detail Styles
   =========================================== */

.letter-detail-container {
    max-width: 800px;
    margin: 24px auto;
    padding: 16px;
}

.letter-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.letter-actions {
    display: flex;
    gap: 8px;
}

/* Envelope View (for sealed letters - recipient perspective) */
.letter-envelope-view {
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 60px 40px;
    text-align: center;
}

.envelope-icon {
    font-size: 80px;
    color: var(--primary);
    margin-bottom: 24px;
}

.envelope-icon.sealed {
    color: #6B7280;
}

.envelope-from {
    margin-bottom: 32px;
}

.envelope-from-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.envelope-from-name {
    font-size: 24px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.envelope-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
}

.envelope-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.envelope-avatar .avatar-initials {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.envelope-date {
    margin-bottom: 32px;
}

.envelope-date-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.envelope-date-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.envelope-date-value.waiting {
    color: #6B7280;
}

.envelope-date-value.ready {
    color: #059669;
}

.btn-open-letter {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 48px;
    background: #059669;
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-open-letter:hover {
    background: #047857;
    transform: scale(1.02);
}

.envelope-waiting-message {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 16px;
}

/* Letter Content View (opened letter) */
.letter-content-card {
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.letter-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.letter-author-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.letter-author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.letter-author-avatar .avatar-initials {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.letter-header-info {
    flex: 1;
}

.letter-direction-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.letter-person-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.letter-dates {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.letter-dates .mdi {
    margin-right: 4px;
}

/* Letter Body */
.letter-body {
    padding: 32px 24px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Letter Photos */
.letter-photos-divider {
    height: 1px;
    background: var(--border);
    margin: 0 24px;
}

.letter-photos {
    padding: 24px 24px;
}

.letter-photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.letter-photo-item {
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s;
}

.letter-photo-item:hover {
    transform: scale(1.02);
}

.letter-photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Letter Footer */
.letter-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: var(--background);
}

.letter-status-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.letter-status-info .mdi {
    font-size: 18px;
}

/* Delete Confirmation Modal */
.delete-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

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

.delete-modal {
    background: white;
    border-radius: 16px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.delete-modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.delete-modal-message {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.delete-modal-actions {
    display: flex;
    gap: 12px;
}

.delete-modal-cancel {
    flex: 1;
    padding: 12px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
}

.delete-modal-confirm {
    flex: 1;
    padding: 12px;
    background: #DC2626;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    cursor: pointer;
}

/* Open Letter Confirmation Modal */
.open-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

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

.open-modal {
    background: white;
    border-radius: 16px;
    padding: 32px;
    max-width: 420px;
    width: 90%;
    text-align: center;
}

.open-modal-icon {
    font-size: 64px;
    color: #059669;
    margin-bottom: 16px;
}

.open-modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.open-modal-message {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.open-modal-actions {
    display: flex;
    gap: 12px;
}

.open-modal-cancel {
    flex: 1;
    padding: 14px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
}

.open-modal-confirm {
    flex: 1;
    padding: 14px;
    background: #059669;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .letters-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .letters-tabs {
        flex-direction: row;
    }

    .letter-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .letter-card-right {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        margin-top: 8px;
    }

    .letter-envelope-view {
        padding: 40px 20px;
    }

    .letter-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .letter-actions {
        width: 100%;
        justify-content: flex-start;
    }
}