/*
Theme Name: Lets Trading
Theme URI: https://letscms.com
Author: LetsCMS
Author URI: https://letscms.com
Description: A modern, dark-themed crypto trading platform WordPress theme. Built for speed, clarity, and a professional crypto trading experience similar to Binance/Coinbase.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lets-trading
Tags: dark, crypto, trading, responsive, custom-logo, custom-colors, blog, e-commerce
*/

/* =========================================================
   RESET & BASE
   ========================================================= */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Brand Colors */
    --color-primary:        #F0B90B; /* Binance Yellow */
    --color-primary-hover:  #d4a20a;
    --color-secondary:      #1E2026;
    --color-accent:         #02C076; /* Green for gains */
    --color-danger:         #F6465D; /* Red for losses */

    /* Background Layers */
    --bg-base:              #0B0E11;
    --bg-surface:           #1E2026;
    --bg-card:              #181A20;
    --bg-card-hover:        #1E2228;
    --bg-hover:             #2B2F36;

    /* Text */
    --text-primary:         #EAECEF;
    --text-secondary:       #848E9C;
    --text-muted:           #474D57;

    /* Borders */
    --border-color:         #2B2F36;
    --border-focus:         #F0B90B;

    /* Typography */
    --font-sans:            'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:            'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --spacing-xs:           4px;
    --spacing-sm:           8px;
    --spacing-md:           16px;
    --spacing-lg:           24px;
    --spacing-xl:           40px;
    --spacing-2xl:          64px;

    /* Border Radius */
    --radius-sm:            4px;
    --radius-md:            8px;
    --radius-lg:            12px;
    --radius-xl:            16px;
    --radius-full:          9999px;

    /* Shadows */
    --shadow-card:          0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow:          0 0 20px rgba(240, 185, 11, 0.15);

    /* Transitions */
    --transition-fast:      0.15s ease;
    --transition-base:      0.25s ease;
    --transition-slow:      0.4s ease;

    /* Layout */
    --container-max:        1280px;
    --header-height:        64px;
}

/* Light Mode Overrides */
body.light-mode {
    --bg-base:              #FAFAFA;
    --bg-surface:           #FFFFFF;
    --bg-card:              #F5F5F5;
    --bg-card-hover:        #EBEBEB;
    --bg-hover:             #EEEEEE;
    --text-primary:         #1E2026;
    --text-secondary:       #474D57;
    --text-muted:           #848E9C;
    --border-color:         #E8E8E8;
    --shadow-card:          0 4px 24px rgba(0, 0, 0, 0.08);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family:        var(--font-sans);
    font-size:          0.9375rem;
    line-height:        1.6;
    color:              var(--text-primary);
    background-color:   var(--bg-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* =========================================================
   TYPOGRAPHY
   ========================================================= */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: clamp(2rem,   5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p { color: var(--text-secondary); margin-bottom: var(--spacing-md); }
p:last-child { margin-bottom: 0; }

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

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol { padding-left: var(--spacing-lg); }
li { margin-bottom: var(--spacing-xs); }

/* =========================================================
   LAYOUT UTILITIES
   ========================================================= */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

.section { padding: var(--spacing-2xl) 0; }
.section-sm { padding: var(--spacing-xl) 0; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.grid { display: grid; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }

.text-primary   { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted     { color: var(--text-muted) !important; }
.text-accent    { color: var(--color-accent) !important; }
.text-danger    { color: var(--color-danger) !important; }
.text-yellow    { color: var(--color-primary) !important; }

.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.hidden { display: none !important; }
.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;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    line-height: 1;
}

.btn-primary {
    background: var(--color-primary);
    color: #0B0E11;
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #0B0E11;
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary);
    color: #0B0E11;
    transform: translateY(-1px);
}

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

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}
.btn-success {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.btn-sm { padding: 6px 16px; font-size: 0.875rem; }
.btn-lg { padding: 14px 32px; font-size: 1.0625rem; }
.btn-xl { padding: 16px 40px; font-size: 1.125rem; }

.btn-icon {
    padding: 8px;
    border-radius: var(--radius-sm);
}

/* =========================================================
   CARDS
   ========================================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}
.card-header {
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

/* =========================================================
   BADGES & TAGS
   ========================================================= */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}
.badge-up   { background: rgba(2, 192, 118, 0.15); color: var(--color-accent); }
.badge-down { background: rgba(246, 70, 93, 0.15);  color: var(--color-danger); }
.badge-neutral { background: var(--bg-hover); color: var(--text-secondary); }

/* =========================================================
   FORMS
   ========================================================= */
.form-group { margin-bottom: var(--spacing-md); }
.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.form-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast);
    outline: none;
}
.form-input:focus {
    border-color: var(--border-focus);
}
.form-input::placeholder { color: var(--text-muted); }

/* =========================================================
   TABLE
   ========================================================= */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}
.data-table th {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}
.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.data-table tr:hover td {
    background: var(--bg-hover);
}
.data-table tr:last-child td { border-bottom: none; }

/* =========================================================
   TICKER BAR
   ========================================================= */
.ticker-bar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
    height: 36px;
    display: flex;
    align-items: center;
}
.ticker-track {
    display: flex;
    gap: var(--spacing-xl);
    animation: ticker-scroll 40s linear infinite;
    white-space: nowrap;
    padding-left: 100%;
}
.ticker-track:hover { animation-play-state: paused; }
.ticker-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    flex-shrink: 0;
}
.ticker-symbol { color: var(--text-primary); font-weight: 600; }
.ticker-price  { font-family: var(--font-mono); color: var(--text-secondary); }

@keyframes ticker-scroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* =========================================================
   SECTION HEADERS
   ========================================================= */
.section-header {
    margin-bottom: var(--spacing-xl);
}
.section-label {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(240, 185, 11, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}
.section-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}
.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 560px;
}

/* =========================================================
   PRICE DISPLAY
   ========================================================= */
.price-up   { color: var(--color-accent); }
.price-down { color: var(--color-danger); }
.price-neutral { color: var(--text-secondary); }

.change-pill {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-mono);
}
.change-pill.up   { background: rgba(2, 192, 118, 0.12); color: var(--color-accent); }
.change-pill.down { background: rgba(246, 70, 93, 0.12);  color: var(--color-danger); }

/* =========================================================
   DIVIDERS & SEPARATORS
   ========================================================= */
.divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-lg) 0;
}

/* =========================================================
   SCROLLBAR
   ========================================================= */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* =========================================================
   RESPONSIVE GRID BREAKDOWNS
   ========================================================= */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
    .container { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
    .section { padding: var(--spacing-xl) 0; }
}
@media (max-width: 480px) {
    :root { --spacing-lg: 16px; }
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* =========================================================
   WORDPRESS CORE CLASSES
   ========================================================= */
.alignleft  { float: left; margin: 0 var(--spacing-lg) var(--spacing-md) 0; }
.alignright { float: right; margin: 0 0 var(--spacing-md) var(--spacing-lg); }
.aligncenter { margin: 0 auto var(--spacing-md); display: block; }
.alignwide  { max-width: calc(var(--container-max) + 160px); }
.alignfull  { max-width: 100%; width: 100%; }

.wp-caption { max-width: 100%; }
.wp-caption-text { font-size: 0.875rem; color: var(--text-muted); margin-top: var(--spacing-xs); }

.sticky { /* WordPress sticky post */ }
.bypostauthor { /* WordPress post author */ }

/* =========================================================
   SITE WRAPPER
   ========================================================= */
#page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
#content {
    flex: 1;
    padding-top: var(--header-height);
}

/* =========================================================
   LOADING STATES
   ========================================================= */
.skeleton {
    background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-hover) 50%, var(--bg-surface) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* =========================================================
   ANIMATIONS
   ========================================================= */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(240, 185, 11, 0.4); }
    50%       { box-shadow: 0 0 0 10px rgba(240, 185, 11, 0); }
}

.animate-fadeInUp { animation: fadeInUp 0.6s ease both; }
.animate-fadeIn   { animation: fadeIn 0.4s ease both; }
.animate-delay-1  { animation-delay: 0.1s; }
.animate-delay-2  { animation-delay: 0.2s; }
.animate-delay-3  { animation-delay: 0.3s; }
.animate-delay-4  { animation-delay: 0.4s; }