/**
 * SalonSync UI Components
 * Version: 1.1
 *
 * This file contains all reusable UI component styles.
 * Based on the SalonSync Design Guidelines.
 */

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--button-padding-md);
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    letter-spacing: var(--letter-spacing-wider);
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition-all);
    text-decoration: none;
    user-select: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary-turquoise);
    outline-offset: 2px;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary-turquoise);
    color: var(--color-neutral-0);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-turquoise-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
    background-color: var(--color-primary-turquoise-active);
    transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
    background-color: transparent;
    color: var(--color-primary-turquoise);
    border: 2px solid var(--color-primary-turquoise);
}

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

/* Magenta Button (for special actions) */
.btn-magenta {
    background-color: var(--color-primary-magenta);
    color: var(--color-neutral-0);
}

.btn-magenta:hover:not(:disabled) {
    background-color: var(--color-primary-magenta-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-magenta:active:not(:disabled) {
    background-color: var(--color-primary-magenta-active);
    transform: translateY(0);
}

/* Outline Button */
.btn-outline {
    background-color: transparent;
    color: var(--color-neutral-900);
    border: 2px solid var(--color-neutral-600);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--color-neutral-900);
    background-color: var(--color-neutral-100);
}

/* Ghost Button */
.btn-ghost {
    background-color: transparent;
    color: var(--color-neutral-900);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-neutral-100);
}

/* Button Sizes */
.btn-sm {
    padding: var(--button-padding-sm);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--button-padding-lg);
    font-size: var(--font-size-lg);
}

/* Full Width Button */
.btn-block {
    width: 100%;
    display: flex;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: var(--color-neutral-0);
    border-radius: var(--border-radius-lg);
    padding: var(--card-padding);
    box-shadow: var(--shadow-sm);
    border: var(--card-border);
    transition: var(--transition-all);
}

.card-interactive {
    cursor: pointer;
}

.card-interactive:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
}

.card-body {
    margin-bottom: var(--spacing-md);
}

.card-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-neutral-100);
}

/* Card Variants */
.card-blush {
    background: var(--color-accent-blush);
    border-color: transparent;
}

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

/* ========================================
   INPUT FIELDS
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-900);
    margin-bottom: var(--spacing-sm);
}

.form-label-required::after {
    content: "*";
    color: var(--color-error);
    margin-left: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--input-padding);
    background-color: var(--color-neutral-0);
    border: var(--input-border);
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    color: var(--color-neutral-900);
    transition: var(--transition-all);
}

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

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-neutral-600);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-600);
    cursor: not-allowed;
}

/* Error State */
.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: var(--shadow-focus-error);
}

.form-error {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

.form-help {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
    margin-top: var(--spacing-xs);
}

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

/* Select */
.form-select {
    width: 100%;
    padding: var(--input-padding);
    background-color: var(--color-neutral-0);
    border: var(--input-border);
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    color: var(--color-neutral-900);
    transition: var(--transition-all);
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary-turquoise);
    box-shadow: var(--shadow-focus);
}

.form-select:disabled {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-600);
    cursor: not-allowed;
}

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

.form-select.error:focus {
    box-shadow: var(--shadow-focus-error);
}

/* Checkbox & Radio */
.form-check {
    margin-bottom: var(--spacing-md);
}

.form-check-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.form-check-input {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    border: 2px solid var(--color-neutral-600);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-all);
    flex-shrink: 0;
}

.form-check-input:checked {
    background-color: var(--color-primary-turquoise);
    border-color: var(--color-primary-turquoise);
}

.form-check-input:focus {
    outline: 2px solid var(--color-primary-turquoise);
    outline-offset: 2px;
}

.form-check-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-check-text {
    font-size: var(--font-size-base);
    color: var(--color-neutral-900);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   BADGES & TAGS
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
}

/* Badge Variants */
.badge-success {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

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

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

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

.badge-primary {
    background-color: var(--color-primary-turquoise);
    color: var(--color-neutral-0);
}

.badge-magenta {
    background-color: var(--color-primary-magenta);
    color: var(--color-neutral-0);
}

.badge-neutral {
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-900);
}

/* ========================================
   ALERTS & NOTIFICATIONS
   ======================================== */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border-left: 4px solid;
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background-color: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--color-success-text);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    border-color: var(--color-warning);
    color: var(--color-warning-text);
}

.alert-error {
    background-color: var(--color-error-bg);
    border-color: var(--color-error);
    color: var(--color-error-text);
}

.alert-info {
    background-color: var(--color-info-bg);
    border-color: var(--color-info);
    color: var(--color-info-text);
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   MODALS & DIALOGS
   ======================================== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 25, 65, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-index-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal {
    background: var(--color-neutral-0);
    border-radius: var(--border-radius-xl);
    max-width: 600px;
    width: 100%;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: var(--z-index-modal);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    margin-bottom: var(--spacing-lg);
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
}

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--color-neutral-600);
    font-size: var(--font-size-2xl);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-neutral-900);
}

.modal-body {
    margin-bottom: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ========================================
   LOADING & SPINNERS
   ======================================== */

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-neutral-100);
    border-top-color: var(--color-primary-turquoise);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

/* ========================================
   PROGRESS STEPS
   ======================================== */

.progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    flex: 1;
}

.progress-step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: var(--transition-all);
}

.progress-step.active .progress-step-number {
    background-color: var(--color-primary-turquoise);
    color: var(--color-neutral-0);
}

.progress-step.completed .progress-step-number {
    background-color: var(--color-success);
    color: var(--color-neutral-0);
}

.progress-step-label {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
    text-align: center;
}

.progress-step.active .progress-step-label {
    color: var(--color-neutral-900);
    font-weight: var(--font-weight-semibold);
}

/* ========================================
   DIVIDER
   ======================================== */

.divider {
    height: 1px;
    background-color: var(--color-neutral-100);
    margin: var(--spacing-lg) 0;
}

.divider-vertical {
    width: 1px;
    height: auto;
    background-color: var(--color-neutral-100);
}

/* ========================================
   AVATAR
   ======================================== */

.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-neutral-100);
    color: var(--color-neutral-900);
    font-weight: var(--font-weight-semibold);
    overflow: hidden;
}

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

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

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

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

/* ========================================
   EMPTY STATE
   ======================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    margin-bottom: var(--spacing-xl);
}

/* ========================================
   SKELETON LOADER
   ======================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-neutral-100) 0%,
        var(--color-neutral-50) 50%,
        var(--color-neutral-100) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius-md);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1em;
    margin-bottom: var(--spacing-sm);
}

.skeleton-heading {
    height: 2em;
    margin-bottom: var(--spacing-md);
}

.skeleton-circle {
    border-radius: 50%;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */

.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 400px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-neutral-0);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toast-slide-in 0.3s ease-out;
    min-width: 300px;
    border-left: 4px solid;
}

.toast-exit {
    animation: toast-slide-out 0.3s ease-in forwards;
}

@keyframes toast-slide-in {
    from {
        transform: translateX(calc(100% + var(--spacing-lg)));
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toast-slide-out {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(calc(100% + var(--spacing-lg)));
        opacity: 0;
    }
}

/* Toast Variants */
.toast-success {
    border-left-color: var(--color-success);
}

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

.toast-error {
    border-left-color: var(--color-error);
}

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

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

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

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

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

/* Toast Elements */
.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

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

.toast-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-900);
    margin-bottom: var(--spacing-2xs);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-700);
    line-height: 1.5;
}

.toast-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    background: none;
    border: none;
    color: var(--color-neutral-500);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition-all);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.toast-close:hover {
    color: var(--color-neutral-900);
}

/* Mobile Responsive */
@media (max-width: 640px) {
    .toast-container {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }

    .toast {
        min-width: 0;
    }

    @keyframes toast-slide-in {
        from {
            transform: translateY(-100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }

    @keyframes toast-slide-out {
        from {
            transform: translateY(0);
            opacity: 1;
        }
        to {
            transform: translateY(-100%);
            opacity: 0;
        }
    }
}

/* ========================================
   GLOBAL ANIMATIONS
   ======================================== */

.fade-in {
    animation: fadeIn 0.4s ease-in-out forwards;
}

.slide-up {
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.scale-in {
    animation: scaleIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.page-transition {
    animation: pageEnter 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from { 
        opacity: 0;
        transform: scale(0.9);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pageEnter {
    from { 
        opacity: 0;
        transform: translateY(10px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}