/*
 * Forex Trading Company - Responsive Styles
 * Media Queries for Adaptive Design
 * Cross-browser compatible with vendor prefixes
 */

/* ========================================
   Breakpoints Reference:
   - Mobile: < 640px
   - Tablet: 640px - 1023px
   - Desktop: 1024px - 1279px
   - Large Desktop: >= 1280px
   ======================================== */

/* ========================================
   Cross-browser Flexbox Utilities
   (Vendor prefixes for older browsers)
   ======================================== */

/* These override base styles with vendor prefixes */
.flex {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
}

.inline-flex {
    display: -webkit-inline-box;
    display: -ms-inline-flexbox;
    display: inline-flex;
}

.flex-col {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.flex-wrap {
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.items-center {
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.justify-center {
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.justify-between {
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

/* Grid with fallback */
.grid {
    display: -ms-grid;
    display: grid;
}

/* Transform vendor prefixes */
.transform {
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
}

/* Transition vendor prefixes */
.transition-all {
    -webkit-transition: all var(--transition-normal);
    -o-transition: all var(--transition-normal);
    transition: all var(--transition-normal);
}

/* ========================================
   Extra Small Devices (Mobile Portrait)
   Max-width: 479px
   ======================================== */
@media (max-width: 479px) {
    /* Typography adjustments */
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    h3 {
        font-size: var(--font-size-xl);
    }
    
    /* Container padding */
    .container {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    /* Section spacing */
    .section {
        padding-top: var(--spacing-2xl);
        padding-bottom: var(--spacing-2xl);
    }
    
    /* Buttons */
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    /* Cards */
    .card-body {
        padding: var(--spacing-md);
    }
    
    .card-feature {
        padding: var(--spacing-md);
    }
    
    /* Forms */
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    /* Modal */
    .modal {
        width: 95%;
        margin: var(--spacing-sm);
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    /* Hide on mobile */
    .hide-mobile {
        display: none !important;
    }
}

/* ========================================
   Small Devices (Mobile Landscape / Small Tablets)
   Min-width: 480px, Max-width: 639px
   ======================================== */
@media (min-width: 480px) and (max-width: 639px) {
    h1 {
        font-size: var(--font-size-4xl);
    }
    
    h2 {
        font-size: var(--font-size-3xl);
    }
    
    .section {
        padding-top: var(--spacing-3xl);
        padding-bottom: var(--spacing-3xl);
    }
    
    /* Grid adjustments */
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    /* Hide on small screens */
    .hide-sm {
        display: none !important;
    }
}

/* ========================================
   Medium Devices (Tablets)
   Min-width: 640px, Max-width: 1023px
   ======================================== */
@media (min-width: 640px) and (max-width: 1023px) {
    /* Typography */
    h1 {
        font-size: var(--font-size-4xl);
    }
    
    /* Container */
    .container {
        padding-left: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }
    
    /* Grid adjustments */
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Navigation */
    .nav-desktop {
        display: none;
    }
    
    .nav-mobile-toggle {
        display: flex;
    }
    
    /* Cards */
    .card-pricing {
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    /* Hide on tablet */
    .hide-tablet {
        display: none !important;
    }
    
    /* Show only on tablet */
    .show-tablet {
        display: block !important;
    }
}

/* ========================================
   Large Devices (Desktops)
   Min-width: 1024px, Max-width: 1279px
   ======================================== */
@media (min-width: 1024px) and (max-width: 1279px) {
    /* Container */
    .container {
        max-width: var(--container-lg);
    }
    
    /* Grid adjustments */
    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Navigation */
    .nav-desktop {
        display: flex;
    }
    
    .nav-mobile-toggle {
        display: none;
    }
    
    /* Hide on desktop */
    .hide-desktop {
        display: none !important;
    }
}

/* ========================================
   Extra Large Devices (Large Desktops)
   Min-width: 1280px
   ======================================== */
@media (min-width: 1280px) {
    /* Container */
    .container {
        max-width: var(--container-xl);
    }
    
    /* Typography */
    h1 {
        font-size: var(--font-size-6xl);
    }
    
    /* Section spacing */
    .section {
        padding-top: var(--spacing-4xl);
        padding-bottom: var(--spacing-4xl);
    }
    
    /* Hide on large screens */
    .hide-lg {
        display: none !important;
    }
}

/* ========================================
   Mobile-First Responsive Utilities
   ======================================== */

/* Flex direction */
@media (max-width: 767px) {
    .flex-col-mobile {
        flex-direction: column;
    }
    
    .flex-col-reverse-mobile {
        flex-direction: column-reverse;
    }
}

/* Text alignment */
@media (max-width: 767px) {
    .text-center-mobile {
        text-align: center;
    }
    
    .text-left-mobile {
        text-align: left;
    }
}

@media (min-width: 768px) {
    .text-center-desktop {
        text-align: center;
    }
    
    .text-left-desktop {
        text-align: left;
    }
}

/* Spacing utilities */
@media (max-width: 767px) {
    .mb-mobile-lg {
        margin-bottom: var(--spacing-lg);
    }
    
    .mb-mobile-xl {
        margin-bottom: var(--spacing-xl);
    }
    
    .mt-mobile-lg {
        margin-top: var(--spacing-lg);
    }
    
    .p-mobile-sm {
        padding: var(--spacing-sm);
    }
    
    .p-mobile-md {
        padding: var(--spacing-md);
    }
}

/* ========================================
   Top Bar Responsive Styles
   ======================================== */
@media (max-width: 1023px) {
    .top-bar {
        display: none;
    }
}

@media (min-width: 1024px) and (max-width: 1199px) {
    .top-bar-contact {
        gap: var(--spacing-md);
    }
    
    .top-bar-link span {
        font-size: var(--font-size-xs);
    }
}

/* ========================================
   Header Responsive Styles
   ======================================== */
@media (max-width: 1023px) {
    :root {
        --header-height: 70px;
    }
    
    .header {
        top: 0 !important;
        padding: var(--spacing-sm) 0;
    }
    
    .header-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-bg-dark);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        overflow-y: auto;
        z-index: var(--z-modal-backdrop);
    }
    
    .header-nav.active {
        transform: translateX(0);
    }
    
    .header-nav .nav {
        flex-direction: column;
        width: 100%;
    }
    
    .header-nav .nav-link {
        width: 100%;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        justify-content: space-between;
    }
    
    .header-actions {
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-lg);
    }
    
    .header-actions .btn {
        width: 100%;
    }
    
    /* Mobile menu toggle */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 44px;
        height: 44px;
        cursor: pointer;
        z-index: var(--z-modal);
    }
    
    .mobile-menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--color-text-primary);
        margin: 3px 0;
        transition: all var(--transition-fast);
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Logo responsive */
    .header-logo .logo-text {
        display: none;
    }
    
    /* Dropdown menus mobile */
    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background-color: rgba(255, 255, 255, 0.02);
        display: none;
        padding-left: var(--spacing-md);
        min-width: 100%;
        margin-top: 0;
    }
    
    .nav-dropdown.active .nav-dropdown-menu {
        display: block;
    }
    
    .nav-dropdown-link {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .dropdown-icon {
        display: none;
    }
    
    .dropdown-content {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .dropdown-desc {
        display: none;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .header-logo .logo-text {
        display: flex;
    }
}

@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }
    
    .header-nav {
        display: flex;
        position: static;
        transform: none;
        background: transparent;
        padding: 0;
    }
    
    .header-actions-mobile {
        display: none;
    }
}

@media (min-width: 1024px) and (max-width: 1199px) {
    .header-nav .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .header-actions .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* ========================================
   Hero Section Responsive
   ======================================== */
@media (max-width: 767px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-3xl) 0;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-stats {
        justify-content: center;
    }
}

/* ========================================
   Features Section Responsive
   ======================================== */
@media (max-width: 639px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 640px) and (max-width: 1023px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Pricing Section Responsive
   ======================================== */
@media (max-width: 767px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .card-pricing {
        max-width: 100%;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid .card-pricing:last-child:nth-child(odd) {
        grid-column: 1 / -1;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Footer Responsive
   ======================================== */
@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-links-group {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-border);
        text-align: left;
    }
    
    .footer-title::after {
        left: 0;
        transform: none;
    }
    
    .footer-links a:hover {
        padding-left: var(--spacing-xs);
    }
    
    .newsletter-input-group {
        flex-direction: column;
    }
    
    .newsletter-btn {
        width: 100%;
    }
    
    .footer-contact {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .regulation-badges {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: left;
    }
    
    .footer-legal-links {
        flex-direction: column;
        gap: var(--spacing-xs);
        align-items: flex-start;
    }
    
    .footer-legal-links .divider {
        display: none;
    }
}

@media (min-width: 481px) and (max-width: 767px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        text-align: left;
        max-width: 100%;
    }
    
    .footer-brand .footer-logo {
        justify-content: flex-start;
    }
    
    .footer-brand .footer-description {
        max-width: 500px;
        margin-left: 0;
        margin-right: 0;
    }
    
    .footer-social {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .social-links {
        justify-content: flex-start;
    }
    
    .footer-newsletter-col {
        grid-column: 1 / -1;
        text-align: left;
        max-width: 100%;
    }
    
    .footer-newsletter-col .footer-title::after {
        left: 0;
        transform: none;
    }
    
    .newsletter-input-group {
        max-width: 400px;
        margin: 0;
    }
    
    .footer-contact {
        display: flex;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }
    
    .footer-links-group {
        text-align: left;
    }
    
    .footer-title::after {
        left: 0;
        transform: none;
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: left;
    }
    
    .footer-legal-links {
        justify-content: flex-start;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xl);
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
        max-width: 100%;
        margin-bottom: var(--spacing-lg);
    }
    
    .footer-brand .footer-logo {
        justify-content: center;
    }
    
    .footer-brand .footer-description {
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .footer-social {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-newsletter-col {
        grid-column: 1 / -1;
        text-align: center;
        max-width: 100%;
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--color-border);
    }
    
    .footer-newsletter-col .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .newsletter-input-group {
        max-width: 450px;
        margin: 0 auto;
    }
    
    .footer-contact {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }
}

@media (min-width: 1024px) and (max-width: 1199px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xl);
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
        max-width: 100%;
        margin-bottom: var(--spacing-lg);
    }
    
    .footer-brand .footer-logo {
        justify-content: center;
    }
    
    .footer-social {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-newsletter-col {
        grid-column: 1 / -1;
        text-align: center;
        max-width: 100%;
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--color-border);
    }
    
    .footer-newsletter-col .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .newsletter-input-group {
        max-width: 450px;
        margin: 0 auto;
    }
    
    .footer-contact {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }
}

@media (min-width: 1200px) {
    .footer-grid {
        grid-template-columns: 1.5fr repeat(3, 1fr) 1.5fr;
        gap: var(--spacing-2xl);
    }
}

/* ========================================
   Trading Components Responsive
   ======================================== */
@media (max-width: 767px) {
    .chart-container {
        min-height: 300px;
    }
    
    .chart-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .chart-timeframes {
        width: 100%;
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
    }
    
    .price-display {
        font-size: var(--font-size-xl);
    }
    
    .card-stat .stat-value {
        font-size: var(--font-size-2xl);
    }
}

/* ========================================
   Form Responsive
   ======================================== */
@media (max-width: 639px) {
    .form-row {
        flex-direction: column;
    }
    
    .form-row > * {
        width: 100%;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

@media (min-width: 640px) {
    .form-row {
        display: flex;
        gap: var(--spacing-md);
    }
    
    .form-row > * {
        flex: 1;
    }
}

/* ========================================
   Table Responsive
   ======================================== */
@media (max-width: 767px) {
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table-responsive table {
        min-width: 600px;
    }
    
    /* Card-style table for mobile */
    .table-cards thead {
        display: none;
    }
    
    .table-cards tbody tr {
        display: block;
        margin-bottom: var(--spacing-md);
        padding: var(--spacing-md);
        background-color: var(--color-bg-card);
        border-radius: var(--radius-md);
    }
    
    .table-cards tbody td {
        display: flex;
        justify-content: space-between;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-border);
    }
    
    .table-cards tbody td:last-child {
        border-bottom: none;
    }
    
    .table-cards tbody td::before {
        content: attr(data-label);
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-muted);
    }
}

/* ========================================
   Modal Responsive
   ======================================== */
@media (max-width: 639px) {
    .modal {
        width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
    }
    
    .modal-body {
        max-height: calc(100vh - 140px);
    }
}

/* ========================================
   Tabs Responsive
   ======================================== */
@media (max-width: 639px) {
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .tabs::-webkit-scrollbar {
        display: none;
    }
    
    .tab {
        white-space: nowrap;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    * {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .header,
    .footer,
    .nav,
    .btn,
    .modal,
    .no-print {
        display: none !important;
    }
    
    a {
        text-decoration: underline;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
    
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    
    p, blockquote {
        orphans: 3;
        widows: 3;
    }
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========================================
   High Contrast Mode
   ======================================== */
@media (prefers-contrast: high) {
    :root {
        --color-border: rgba(255, 255, 255, 0.3);
        --color-border-light: rgba(255, 255, 255, 0.5);
    }
    
    .btn {
        border-width: 3px;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        border-width: 2px;
    }
}

/* ========================================
   Dark Mode Preference (already dark by default)
   Light mode override if needed
   ======================================== */
@media (prefers-color-scheme: light) {
    /* 
     * Note: This site is designed dark-first for forex trading.
     * Light mode can be implemented here if needed.
     * Currently keeping dark theme for all users.
     */
}