/**
 * eCafe - Global Styles
 * Apple-style design system
 */

/* ========================================
   CSS Variables
   ======================================== */

:root {
    /* Colors */
    --color-primary-1: #000000;
    --color-primary-2: #333333;
    --color-primary-3: #666666;
    
    --color-success: #34c759;
    --color-success-light: #e8f9ed;
    --color-warning: #ff9500;
    --color-warning-light: #fff4e5;
    --color-error: #ff3b30;
    --color-error-light: #ffebea;
    --color-info: #007aff;
    --color-info-light: #e5f1ff;
    
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f7;
    --color-gray-200: #e8e8ed;
    --color-gray-300: #d2d2d7;
    --color-gray-400: #aeaeb2;
    --color-gray-500: #8e8e93;
    --color-gray-600: #636366;
    --color-gray-700: #48484a;
    --color-gray-800: #3a3a3c;
    --color-gray-900: #1d1d1f;
    --color-black: #000000;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-size-xs: 0.6875rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-lg: 1.0625rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-modal: 200;
    --z-toast: 300;
}

/* ========================================
   Reset & Base
   ======================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
}

a {
    color: var(--color-info);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-1);
}

img {
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input, select, textarea, button {
    font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

code {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.875em;
    background: var(--color-gray-100);
    padding: 0.125em 0.375em;
    border-radius: var(--radius-sm);
}

hr {
    border: none;
    border-top: 1px solid var(--color-gray-200);
    margin: var(--spacing-6) 0;
}

/* ========================================
   Icons
   ======================================== */

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

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

.icon-lg {
    width: 28px;
    height: 28px;
}

.icon-xl {
    width: 48px;
    height: 48px;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.25;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--color-primary-1);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-2);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-200);
}

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

.btn-success:hover:not(:disabled) {
    filter: brightness(0.95);
}

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

.btn-danger:hover:not(:disabled) {
    filter: brightness(0.95);
}

.btn-ghost {
    background: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

.btn-ghost.btn-danger {
    color: var(--color-error);
}

.btn-ghost.btn-danger:hover:not(:disabled) {
    background: var(--color-error-light);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
}

.btn-block {
    width: 100%;
}

/* ========================================
   Forms
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2);
}

.form-group .required {
    color: var(--color-error);
}

.input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--color-info);
    box-shadow: 0 0 0 3px var(--color-info-light);
}

.input::placeholder {
    color: var(--color-gray-400);
}

.input:disabled {
    background: var(--color-gray-100);
    cursor: not-allowed;
}

.input.textarea {
    resize: vertical;
    min-height: 100px;
}

.input.select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24'%3E%3Cpath fill='%23636366' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.input-wrapper {
    position: relative;
}

.input-wrapper .input {
    padding-left: 44px;
}

.input-wrapper .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    fill: var(--color-gray-400);
    pointer-events: none;
}

.input-addon {
    display: flex;
    align-items: stretch;
}

.input-addon .addon-text {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-3);
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    white-space: nowrap;
}

.input-addon .input {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-2);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4) var(--spacing-6);
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-section {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-xs);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-100);
}

.section-title .icon {
    color: var(--color-gray-400);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    padding-top: var(--spacing-4);
}

/* Color Input */
.color-inputs {
    display: flex;
    gap: var(--spacing-4);
}

.color-input-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
}

.color-input {
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 0;
    cursor: pointer;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: none;
    border-radius: var(--radius-sm);
}

.color-input-wrapper span {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* File Upload */
.file-upload {
    position: relative;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.file-upload:hover {
    border-color: var(--color-info);
    background: var(--color-info-light);
}

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-500);
}

.file-preview {
    max-width: 200px;
    max-height: 150px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--color-gray-400);
}

.password-toggle:hover {
    color: var(--color-gray-600);
}

/* Checkbox */
.checkbox-group {
    margin-bottom: var(--spacing-4);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary-1);
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-100);
}

.card-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

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

/* ========================================
   Tables
   ======================================== */

.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-4) var(--spacing-5);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-100);
}

.table th {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-500);
    background: var(--color-gray-50);
    white-space: nowrap;
}

.table tbody tr:hover {
    background: var(--color-gray-50);
}

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

.table-link {
    font-weight: 500;
    color: var(--color-gray-900);
}

.table-link:hover {
    color: var(--color-info);
}

.table-actions {
    display: flex;
    gap: var(--spacing-2);
    justify-content: flex-end;
}

.row-danger {
    background: var(--color-error-light) !important;
}

.row-warning {
    background: var(--color-warning-light) !important;
}

/* ========================================
   Badges
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

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

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

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

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

.badge-sm {
    padding: 2px var(--spacing-2);
    font-size: 10px;
}

/* ========================================
   Alerts
   ======================================== */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-6);
}

.alert .icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-content {
    flex: 1;
}

.alert-content strong {
    display: block;
    margin-bottom: var(--spacing-1);
}

.alert-content p {
    margin: 0;
    font-size: var(--font-size-sm);
}

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

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

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

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

/* ========================================
   Empty States
   ======================================== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-6);
    text-align: center;
}

.empty-state .icon {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-4);
}

.empty-state h3 {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2);
}

.empty-state p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
}

.empty-state-sm {
    padding: var(--spacing-6);
}

.empty-state-sm .icon {
    width: 32px;
    height: 32px;
}

/* ========================================
   Toast
   ======================================== */

.toast {
    position: fixed;
    bottom: var(--spacing-6);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: var(--z-toast);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ========================================
   Utility Classes
   ======================================== */

.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-muted { color: var(--color-gray-500); }
.text-center { text-align: center; }
.text-right { text-align: right; }

.inline-form { display: inline; }

.divider {
    border: none;
    border-top: 1px solid var(--color-gray-200);
    margin: var(--spacing-6) 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}