/*
 * Healthcare AI - UI Components
 * Clean, professional component styles
 */

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    min-height: 44px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary-bg);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-light);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-bg-muted);
    color: var(--color-text);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
    border-color: var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background-color: #16a34a;
    border-color: #16a34a;
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    min-height: 48px;
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    min-height: 36px;
    font-size: var(--font-size-sm);
}

.btn-icon {
    padding: var(--space-2);
    min-width: 40px;
    min-height: 40px;
}

.btn-full {
    width: 100%;
}

/* ==================== CARDS ==================== */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-clickable {
    cursor: pointer;
}

.card-clickable:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-subtle);
    border-top: 1px solid var(--color-border-light);
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    min-height: 44px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input.error {
    border-color: var(--color-danger);
}

.form-input.success {
    border-color: var(--color-success);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 18px;
    padding-right: var(--space-10);
}

.form-hint {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.form-error {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-danger);
}

/* Input Group */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group .form-input {
    padding-left: var(--space-12);
}

.input-icon {
    position: absolute;
    left: var(--space-4);
    color: var(--color-text-muted);
    pointer-events: none;
    display: flex;
    align-items: center;
}

.input-action {
    position: absolute;
    right: var(--space-2);
    padding: var(--space-2);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.input-action:hover {
    color: var(--color-text-light);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: 44px;
    cursor: pointer;
}

.form-check-input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    cursor: pointer;
}

/* ==================== BADGES ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-gray {
    background: var(--color-bg-muted);
    color: var(--color-text-light);
}

/* ==================== AVATAR ==================== */
.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xs);
}

.avatar-lg {
    width: 48px;
    height: 48px;
    font-size: var(--font-size-base);
}

.avatar-xl {
    width: 64px;
    height: 64px;
    font-size: var(--font-size-xl);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
}

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin: 0;
}

.modal-close {
    padding: var(--space-2);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
}

.modal-close:hover {
    background: var(--color-bg-muted);
    color: var(--color-text-light);
}

.modal-body {
    padding: var(--space-6);
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    min-width: 320px;
    max-width: 420px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp var(--transition-normal) ease-out;
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

.toast-close {
    padding: var(--space-1);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
}

.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-error .toast-icon {
    color: var(--color-danger);
}

.toast-warning .toast-icon {
    color: var(--color-warning);
}

.toast-info .toast-icon {
    color: var(--color-info);
}

/* ==================== LOADER ==================== */
.loader {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loader-sm {
    width: 16px;
    height: 16px;
}

.loader-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

.loader-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

/* ==================== NAVIGATION ==================== */
.navbar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--color-primary);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--color-white);
    border-right: 1px solid var(--color-border);
    padding: var(--space-6);
    z-index: var(--z-sticky);
    overflow-y: auto;
}

.sidebar-nav {
    list-style: none;
}

.sidebar-item {
    margin-bottom: var(--space-1);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-light);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.sidebar-link:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
}

.sidebar-link.active {
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

/* Mobile Bottom Nav */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: var(--space-2) var(--space-4);
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    z-index: var(--z-sticky);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2);
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
}

.bottom-nav-item.active,
.bottom-nav-item:hover {
    color: var(--color-primary);
}

/* ==================== CHAT BUBBLES ==================== */
.chat-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-4);
}

.chat-message {
    display: flex;
    gap: var(--space-3);
    max-width: 80%;
    animation: fadeInUp var(--transition-normal) ease-out;
}

.chat-message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-bubble {
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-sm);
}

.chat-message.ai .chat-bubble {
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.chat-message.user .chat-bubble {
    background: var(--color-primary);
    color: var(--color-white);
}

.chat-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

.chat-input-container {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.chat-input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-fast);
}

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

.chat-send {
    min-width: 44px;
    min-height: 44px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.chat-send:hover {
    background: var(--color-primary-dark);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--space-3) var(--space-4);
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes typingBounce {

    0%,
    80%,
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }

    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ==================== TABLES ==================== */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th,
.table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.table th {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    background: var(--color-bg-subtle);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr:hover {
    background: var(--color-bg-subtle);
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
    padding: var(--space-12) var(--space-6);
    text-align: center;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    color: var(--color-text-muted);
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

/* ==================== ICON STYLES ==================== */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.icon-md {
    width: 20px;
    height: 20px;
}

.icon-lg {
    width: 24px;
    height: 24px;
}

.icon-xl {
    width: 32px;
    height: 32px;
}

.icon-box {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.icon-box-sm {
    width: 40px;
    height: 40px;
}

.icon-box-lg {
    width: 56px;
    height: 56px;
}

.icon-box-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.icon-box-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.icon-box-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

/* ==================== RESPONSIVE HELPERS ==================== */
.hide-mobile {
    display: none;
}

.show-mobile {
    display: block;
}

@media (min-width: 768px) {
    .hide-mobile {
        display: flex;
    }

    .show-mobile {
        display: none;
    }
}