/* Components */

.nav-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: calc(44px + var(--safe-top));
    background: var(--nav-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 0.5px solid var(--separator);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--safe-top) 16px 0;
}

.nav-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    flex: 1;
    color: var(--text-primary);
    letter-spacing: -0.4px;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--accent);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    padding: 8px;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

.tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--tab-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-top: 0.5px solid var(--separator);
    display: flex;
    justify-content: space-around;
    padding-bottom: var(--safe-bottom);
    height: calc(49px + var(--safe-bottom));
}

@media (min-width: 500px) {
    .tab-bar {
        position: absolute;
    }
}

.tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 10px;
    padding: 4px 0;
    cursor: pointer;
    transition: color 0.2s;
    gap: 2px;
}

.tab-item svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.tab-item.active {
    color: var(--accent);
}

.search-container {
    padding: 8px 16px;
    background: var(--bg-grouped);
}

.search-input {
    width: 100%;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--input-bg);
    border: none;
    padding: 0 12px 0 36px;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='16' height='16' fill='rgba(60, 60, 67, 0.6)'%3E%3Cpath d='M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 10px center;
    transition: background 0.2s;
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-input:focus {
    outline: none;
    background: var(--input-bg);
}

[dir='rtl'] .search-input {
    padding: 0 36px 0 12px;
    background-position: right 10px center;
}

.filter-bar {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar {
    display: none;
}

.filter-chip {
    white-space: nowrap;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--input-bg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-chip.active {
    background: var(--accent);
    color: white;
}

.contact-list {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0 0 100px 0;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--card-bg);
    border-bottom: 0.5px solid var(--separator);
    cursor: pointer;
    transition: background 0.15s;
    animation: fadeIn 0.3s ease;
}

.contact-card:active {
    background: var(--bg-tertiary);
}

.card-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

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

.card-name {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-detail {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-tags {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    flex-wrap: nowrap;
    overflow: hidden;
}

.card-chevron {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.card-chevron svg {
    width: 14px;
    height: 14px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    background: var(--tag-blue-bg);
    color: var(--tag-blue);
}

.tag-green { background: var(--tag-green-bg); color: var(--tag-green); }
.tag-orange { background: var(--tag-orange-bg); color: var(--tag-orange); }
.tag-red { background: var(--tag-red-bg); color: var(--tag-red); }
.tag-purple { background: var(--tag-purple-bg); color: var(--tag-purple); }
.tag-teal { background: var(--tag-teal-bg); color: var(--tag-teal); }
.tag-pink { background: var(--tag-pink-bg); color: var(--tag-pink); }
.tag-indigo { background: var(--tag-indigo-bg); color: var(--tag-indigo); }

.fab {
    position: fixed;
    z-index: 50;
    bottom: calc(49px + var(--safe-bottom) + 16px);
    right: 16px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    border: none;
    font-size: 28px;
    font-weight: 300;
    line-height: 1;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

[dir='rtl'] .fab {
    right: auto;
    left: 16px;
}

@media (min-width: 500px) {
    .fab {
        position: absolute;
    }
}

.fab:active {
    transform: scale(0.92);
}

.fab:hover {
    box-shadow: var(--shadow-lg);
    background: var(--accent-hover);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    text-align: center;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.5;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.4;
    pointer-events: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--input-bg);
    color: var(--accent);
}

.btn-danger {
    background: var(--destructive);
    color: white;
}

.btn-text {
    background: transparent;
    color: var(--accent);
    padding: 8px 12px;
}

.btn-block {
    width: 100%;
    display: flex;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    animation: fadeIn 0.2s;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

@media (min-width: 500px) {
    .modal-overlay {
        position: absolute;
    }
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 85vh;
    overflow-y: auto;
    padding-bottom: var(--safe-bottom);
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 0.5px solid var(--separator);
}

.modal-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--input-bg);
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-top: 0.5px solid var(--separator);
}

.toast-container {
    position: fixed;
    top: calc(var(--safe-top) + 50px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: calc(100% - 32px);
    max-width: 400px;
}

@media (min-width: 500px) {
    .toast-container {
        position: absolute;
    }
}

.toast {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-success { background: #34C759; color: white; }
.toast-error { background: #FF3B30; color: white; }
.toast-info { background: var(--card-bg); color: var(--text-primary); border: 0.5px solid var(--separator); }

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--separator);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 500px) {
    .loading-overlay {
        position: absolute;
    }
}

.loading-overlay .loading-spinner {
    width: 40px;
    height: 40px;
}

/* Forms */
.form-container {
    padding: 0 0 120px 0;
    overflow-y: auto;
    height: 100%;
}

.form-section {
    margin-bottom: 24px;
}

.form-section .section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 16px;
}

.form-group {
    background: var(--card-bg);
    padding: 0 16px;
    border-bottom: 0.5px solid var(--separator);
}

.form-group:last-child {
    border-bottom: none;
}

.form-group-inner {
    display: flex;
    flex-direction: column;
    padding: 12px 0;
}

.form-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: var(--font-weight-regular);
}

.form-input, .form-textarea {
    width: 100%;
    border: none;
    background: transparent;
    font-size: var(--font-size-md);
    color: var(--text-primary);
    font-family: inherit;
    padding: 0;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
}

.form-input::placeholder, .form-textarea::placeholder {
    color: var(--text-tertiary);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
    line-height: 1.5;
}

.photo-upload {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 16px;
    gap: 12px;
    background: var(--card-bg);
}

.photo-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--bg-tertiary);
    border: 3px solid var(--separator);
}

.photo-btn {
    color: var(--accent);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.tags-input {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 0;
    align-items: center;
}

.tags-input .tag {
    padding: 6px 10px;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tag-remove {
    background: none;
    border: none;
    color: inherit;
    opacity: 0.7;
    font-size: 14px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.tag-add-btn {
    padding: 6px 12px;
    border-radius: var(--radius-full);
    background: var(--input-bg);
    color: var(--text-secondary);
    border: 1px dashed var(--text-tertiary);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.files-upload {
    padding: 12px 16px;
    background: var(--card-bg);
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 0.5px solid var(--separator);
}

.file-item:last-child {
    border-bottom: none;
}

.file-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 18px;
    flex-shrink: 0;
}

.file-name {
    flex: 1;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.file-delete {
    color: var(--destructive);
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
}

.form-actions {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    padding-bottom: calc(12px + var(--safe-bottom));
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 0.5px solid var(--separator);
    display: flex;
    gap: 12px;
    z-index: 50;
}

@media (min-width: 500px) {
    .form-actions {
        position: absolute;
    }
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 51px;
    height: 31px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    cursor: pointer;
    background: var(--bg-tertiary);
    border-radius: 34px;
    transition: 0.3s;
}

.toggle-slider::before {
    content: '';
    width: 27px;
    height: 27px;
    border-radius: 50%;
    background: white;
    position: absolute;
    left: 2px;
    bottom: 2px;
    transition: 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

[dir='rtl'] .toggle-slider::before {
    left: auto;
    right: 2px;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--success);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

[dir='rtl'] .toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(-20px);
}