/* CFD Staking Platform - Shared Styles */
/* Based on design.md "Institutional Gold" design system */

:root {
    /* Colors */
    --color-bg: #000000;
    --color-bg-pure: #000000;
    --color-surface: #0f141e;
    --color-surface-dim: #09141f;
    --color-surface-bright: #2f3a47;
    --color-surface-container: #16202c;
    --color-surface-container-high: #202b37;
    --color-surface-container-highest: #2b3642;
    --color-surface-border: rgba(255,255,255,0.06);
    --color-surface-border-strong: rgba(255,255,255,0.12);
    
    --color-primary: #f59e0b;
    --color-primary-hover: #e08e0b;
    --color-primary-light: #ffc174;
    --color-primary-dark: #d48a0a;
    --color-primary-container: #f59e0b;
    --color-on-primary: #000000;
    
    --color-text-primary: #f4f4f5;
    --color-text-secondary: #8b96a5;
    --color-text-muted: #6b7280;
    --color-text-inverse: #000000;
    
    --color-success: #10b981;
    --color-success-light: #34d399;
    --color-success-container: #064e3b;
    --color-on-success: #ffffff;
    
    --color-error: #ef4444;
    --color-error-light: #f87171;
    --color-error-container: #7f1d1d;
    --color-on-error: #ffffff;
    
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    --color-input-bg: #000000;
    --color-input-border: rgba(255,255,255,0.1);
    --color-input-border-focus: #f59e0b;
    --color-input-border-error: #ef4444;
    --color-input-border-success: #10b981;
    --color-input-placeholder: rgba(139,150,165,0.5);
    
    /* Typography */
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 10px;
    --font-size-sm: 12px;
    --font-size-md: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 30px;
    --font-size-3xl: 36px;
    --font-size-4xl: 48px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-snug: 1.3;
    --line-height-normal: 1.4;
    --line-height-relaxed: 1.5;
    
    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 10px;
    --space-4: 14px;
    --space-5: 16px;
    --space-6: 20px;
    --space-7: 24px;
    --space-8: 28px;
    --space-9: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Border Radius */
    --radius-xs: 14px;
    --radius-sm: 18px;
    --radius-md: 20px;
    --radius-lg: 24px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-card: rgba(0,0,0,0.8) 0px 12px 32px -8px, rgba(255,255,255,0.05) 0px 1px 0px 0px inset;
    --shadow-card-hover: rgba(0,0,0,0.9) 0px 16px 40px -12px, rgba(255,255,255,0.08) 0px 1px 0px 0px inset;
    --shadow-dropdown: rgba(0,0,0,0.9) 0px 20px 40px -12px;
    --shadow-modal: rgba(0,0,0,0.95) 0px 24px 48px -12px;
    
    /* Transitions */
    --transition-instant: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --container-max: 1280px;
    --header-height: 64px;
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: var(--line-height-relaxed);
    min-height: 100vh;
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: rgba(245, 158, 11, 0.3);
    color: var(--color-text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-surface);
}
::-webkit-scrollbar-thumb {
    background: var(--color-surface-container-high);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-surface-bright);
}

/* Typography Utilities */
.text-primary { color: var(--color-text-primary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }
.text-muted { color: var(--color-text-muted) !important; }
.text-success { color: var(--color-success) !important; }
.text-error { color: var(--color-error) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-primary-accent { color: var(--color-primary) !important; }

.fw-medium { font-weight: var(--font-weight-medium) !important; }
.fw-semibold { font-weight: var(--font-weight-semibold) !important; }
.fw-bold { font-weight: var(--font-weight-bold) !important; }

.fs-xs { font-size: var(--font-size-xs) !important; }
.fs-sm { font-size: var(--font-size-sm) !important; }
.fs-md { font-size: var(--font-size-md) !important; }
.fs-base { font-size: var(--font-size-base) !important; }
.fs-lg { font-size: var(--font-size-lg) !important; }
.fs-xl { font-size: var(--font-size-xl) !important; }
.fs-2xl { font-size: var(--font-size-2xl) !important; }
.fs-3xl { font-size: var(--font-size-3xl) !important; }

/* Layout Utilities */
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.flex-column { flex-direction: column !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-center { justify-content: center !important; }
.align-items-center { align-items: center !important; }
.gap-1 { gap: var(--space-1) !important; }
.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.gap-5 { gap: var(--space-5) !important; }
.gap-6 { gap: var(--space-6) !important; }

/* Card Component */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-surface-border-strong);
}
.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-surface-border);
}
.card-body {
    padding: var(--space-6);
}
.card-footer {
    padding: var(--space-5) var(--space-6);
    border-top: 1px solid var(--color-surface-border);
    background: var(--color-surface-dim);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: inherit;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-instant);
    white-space: nowrap;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

.btn-secondary {
    background: var(--color-surface-container);
    color: var(--color-text-primary);
    border: 1px solid var(--color-surface-border);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--color-surface-container-high);
    border-color: var(--color-surface-border-strong);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}
.btn-outline:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-on-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid transparent;
}
.btn-ghost:hover:not(:disabled) {
    background: var(--color-surface-container);
    color: var(--color-text-primary);
}

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

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-xs);
}
.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-md);
}
.btn-full { width: 100%; }

/* Form Components */
.form-group { margin-bottom: var(--space-5); }
.form-label {
    display: block;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}
.form-label .required { color: var(--color-error); margin-left: var(--space-1); }

.form-control {
    width: 100%;
    height: 52px;
    background: var(--color-input-bg);
    border: 1px solid var(--color-input-border);
    border-radius: var(--radius-xs);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    padding: 0 var(--space-5);
    transition: border-color var(--transition-instant), box-shadow var(--transition-instant);
}
.form-control::placeholder { color: var(--color-input-placeholder); }
.form-control:focus {
    outline: none;
    border-color: var(--color-input-border-focus);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}
.form-control.is-invalid {
    border-color: var(--color-input-border-error);
}
.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}
.form-control.is-valid {
    border-color: var(--color-input-border-success);
}
.form-control.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.form-control-sm { height: 40px; padding: 0 var(--space-4); font-size: var(--font-size-sm); }
.form-control-lg { height: 56px; padding: 0 var(--space-6); font-size: var(--font-size-lg); }

.input-wrapper { position: relative; }
.input-icon {
    position: absolute;
    left: var(--space-5);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    font-size: 18px;
    pointer-events: none;
    transition: color var(--transition-instant);
}
.form-control:focus + .input-icon { color: var(--color-primary); }
.form-control[style*="padding-left: 48px"] { padding-left: 48px; }

.password-toggle {
    position: absolute;
    right: var(--space-5);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: var(--space-1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-instant);
}
.password-toggle:hover { color: var(--color-primary); }
.password-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.invalid-feedback {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--space-2);
    min-height: 18px;
}
.valid-feedback {
    display: block;
    color: var(--color-success);
    font-size: var(--font-size-sm);
    margin-top: var(--space-2);
    min-height: 18px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}
.form-check-input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}
.form-check-label {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}
.badge-primary { background: rgba(245,158,11,0.15); color: var(--color-primary); }
.badge-success { background: rgba(16,185,129,0.15); color: var(--color-success); }
.badge-error { background: rgba(239,68,68,0.15); color: var(--color-error); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--color-warning); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--color-info); }

/* Alert */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.alert-error { background: var(--color-error-container); border-color: var(--color-error); color: var(--color-on-error); }
.alert-success { background: var(--color-success-container); border-color: var(--color-success); color: var(--color-on-success); }
.alert-warning { background: rgba(245,158,11,0.15); border-color: var(--color-warning); color: var(--color-text-primary); }
.alert-info { background: rgba(59,130,246,0.15); border-color: var(--color-info); color: var(--color-text-primary); }

/* Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0,0,0,0.3);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
.spinner-light {
    border-color: rgba(255,255,255,0.3);
    border-top-color: #fff;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Loading State */
.btn.loading .btn-text { display: none; }
.btn.loading .spinner { display: inline-block; }

/* Table */
.table { width: 100%; border-collapse: collapse; }
.table th,
.table td { padding: var(--space-4) var(--space-5); text-align: left; border-bottom: 1px solid var(--color-surface-border); }
.table th { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.05em; background: var(--color-surface-dim); }
.table tbody tr { transition: background var(--transition-instant); }
.table tbody tr:hover { background: var(--color-surface-container-low); }
.table-striped tbody tr:nth-of-type(odd) { background: var(--color-surface-dim); }

/* Dropdown */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    padding: var(--space-2);
    z-index: 1000;
    display: none;
}
.dropdown.show .dropdown-menu { display: block; animation: fadeIn 150ms var(--transition-instant); }
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-md);
    border-radius: var(--radius-xs);
    transition: background var(--transition-instant);
}
.dropdown-item:hover { background: var(--color-surface-container); }
.dropdown-divider { height: 1px; background: var(--color-surface-border); margin: var(--space-2) 0; }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform var(--transition-fast);
}
.modal-overlay.show .modal { transform: scale(1); }
.modal-header { padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--color-surface-border); display: flex; justify-content: space-between; align-items: center; }
.modal-title { font-size: var(--font-size-xl); font-weight: var(--font-weight-semibold); }
.modal-close { background: none; border: none; color: var(--color-text-secondary); font-size: 24px; cursor: pointer; padding: var(--space-1); line-height: 1; }
.modal-close:hover { color: var(--color-text-primary); }
.modal-body { padding: var(--space-6); }
.modal-footer { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--color-surface-border); display: flex; justify-content: flex-end; gap: var(--space-3); }

/* Toast/Notification */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.toast {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    padding: var(--space-4) var(--space-5);
    min-width: 300px;
    max-width: 450px;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    animation: slideIn 300ms var(--transition-fast);
}
@keyframes slideIn { from { opacity: 0; transform: translateX(100%); } to { opacity: 1; transform: translateX(0); } }
.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info { border-left: 4px solid var(--color-info); }
.toast-icon { flex-shrink: 0; margin-top: 2px; }
.toast-content { flex: 1; }
.toast-title { font-weight: var(--font-weight-semibold); margin-bottom: var(--space-1); }
.toast-message { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.toast-close { background: none; border: none; color: var(--color-text-muted); cursor: pointer; padding: var(--space-1); flex-shrink: 0; }

/* Tabs */
.tabs { border-bottom: 1px solid var(--color-surface-border); display: flex; gap: var(--space-1); }
.tab-btn {
    padding: var(--space-3) var(--space-5);
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-instant);
}
.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}
.tab-btn.active { color: var(--color-primary); }
.tab-btn.active::after { transform: scaleX(1); }
.tab-btn:hover:not(.active) { color: var(--color-text-primary); }

/* Pagination */
.pagination { display: flex; align-items: center; gap: var(--space-2); }
.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-4);
    border-radius: var(--radius-xs);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-instant);
}
.pagination a:hover { background: var(--color-surface-container); color: var(--color-text-primary); }
.pagination .active { background: var(--color-primary); color: var(--color-on-primary); }
.pagination .disabled { opacity: 0.4; pointer-events: none; }

/* Avatar */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    overflow: hidden;
}
.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-sm); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-lg); }
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* Utility Classes */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ratio-16x9 { aspect-ratio: 16/9; }
.ratio-4x3 { aspect-ratio: 4/3; }
.ratio-1x1 { aspect-ratio: 1/1; }

/* Responsive */
@media (max-width: 768px) {
    :root { --header-height: 56px; --sidebar-width: 100%; }
    .btn-lg { padding: var(--space-3) var(--space-6); }
    .card { border-radius: var(--radius-md); }
    .modal { margin: var(--space-4); max-height: calc(100vh - var(--space-8)); }
    .toast-container { left: var(--space-4); right: var(--space-4); top: auto; bottom: var(--space-4); }
    .toast { min-width: 0; max-width: 100%; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    :root { --container-max: 100%; }
}