/* ============================================
   LAYOUT.CSS - Trading Webapp Layout System
   ============================================ */

/* ============================================
   CSS RESET & BASE
   ============================================ */

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 
                 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', 
                 sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   LAYOUT CONTAINER SYSTEM
   ============================================ */

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-fluid {
    width: 100%;
    padding: 0 2rem;
}

.container-narrow {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   FLEXBOX UTILITIES
   ============================================ */

.flex {
    display: flex;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

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

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.align-start {
    align-items: flex-start;
}

.align-center {
    align-items: center;
}

.align-end {
    align-items: flex-end;
}

.align-stretch {
    align-items: stretch;
}

.flex-1 {
    flex: 1;
}

.flex-grow {
    flex-grow: 1;
}

.flex-shrink-0 {
    flex-shrink: 0;
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.gap-sm {
    gap: 0.75rem;
}

.gap-md {
    gap: 1.5rem;
}

.gap-lg {
    gap: 2rem;
}

.gap-xl {
    gap: 3rem;
}

/* ============================================
   MAIN LAYOUT STRUCTURE
   ============================================ */

.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.app-main {
    display: flex;
    flex: 1;
    min-height: 0;
}

.app-sidebar {
    width: 260px;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.app-content {
    flex: 1;
    min-width: 0;
    padding: 2rem;
}

.app-footer {
    width: 100%;
    padding: 1.5rem 0;
}

/* ============================================
   SECTION LAYOUTS
   ============================================ */

.section {
    padding: 3rem 0;
}

.section-sm {
    padding: 2rem 0;
}

.section-lg {
    padding: 4rem 0;
}

.section-xl {
    padding: 6rem 0;
}

/* ============================================
   CARD LAYOUTS
   ============================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.card-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* ============================================
   SPLIT LAYOUTS
   ============================================ */

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    min-height: 100%;
}

.split-layout-thirds {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

/* ============================================
   SPACING UTILITIES
   ============================================ */

/* Margins */
.m-0 { margin: 0; }
.m-1 { margin: 0.5rem; }
.m-2 { margin: 1rem; }
.m-3 { margin: 1.5rem; }
.m-4 { margin: 2rem; }
.m-5 { margin: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.5rem; }
.ml-2 { margin-left: 1rem; }
.ml-3 { margin-left: 1.5rem; }
.ml-4 { margin-left: 2rem; }
.ml-auto { margin-left: auto; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.5rem; }
.mr-2 { margin-right: 1rem; }
.mr-3 { margin-right: 1.5rem; }
.mr-4 { margin-right: 2rem; }
.mr-auto { margin-right: auto; }

.mx-auto { margin-left: auto; margin-right: auto; }

/* Paddings */
.p-0 { padding: 0; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.5rem; }
.pt-2 { padding-top: 1rem; }
.pt-3 { padding-top: 1.5rem; }
.pt-4 { padding-top: 2rem; }
.pt-5 { padding-top: 3rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.5rem; }
.pb-2 { padding-bottom: 1rem; }
.pb-3 { padding-bottom: 1.5rem; }
.pb-4 { padding-bottom: 2rem; }
.pb-5 { padding-bottom: 3rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.5rem; }
.pl-2 { padding-left: 1rem; }
.pl-3 { padding-left: 1.5rem; }
.pl-4 { padding-left: 2rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.5rem; }
.pr-2 { padding-right: 1rem; }
.pr-3 { padding-right: 1.5rem; }
.pr-4 { padding-right: 2rem; }

.px-2 { padding-left: 1rem; padding-right: 1rem; }
.px-3 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-4 { padding-left: 2rem; padding-right: 2rem; }

.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-4 { padding-top: 2rem; padding-bottom: 2rem; }

/* ============================================
   DISPLAY UTILITIES
   ============================================ */

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-inline {
    display: inline;
}

.d-inline-block {
    display: inline-block;
}

/* ============================================
   POSITION UTILITIES
   ============================================ */

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.sticky {
    position: sticky;
}

/* ============================================
   WIDTH & HEIGHT UTILITIES
   ============================================ */

.w-100 {
    width: 100%;
}

.w-50 {
    width: 50%;
}

.w-auto {
    width: auto;
}

.h-100 {
    height: 100%;
}

.h-auto {
    height: auto;
}

.min-h-screen {
    min-height: 100vh;
}

/* ============================================
   OVERFLOW UTILITIES
   ============================================ */

.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

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

.overflow-y-auto {
    overflow-y: auto;
}

/* ============================================
   TEXT ALIGNMENT
   ============================================ */

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

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

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

/* ============================================
   MOBILE RESPONSIVE (< 1024px)
   ============================================ */

@media (max-width: 1024px) {
    
    /* Container adjustments */
    .container,
    .container-fluid,
    .container-narrow {
        padding: 0 1.5rem;
    }
    
    /* App layout - stack sidebar */
    .app-main {
        flex-direction: column;
    }
    
    .app-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        order: -1;
    }
    
    .app-content {
        padding: 1.5rem;
    }
    
    /* Grid systems - single column */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .card-grid-2,
    .card-grid-3 {
        grid-template-columns: 1fr;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    /* Split layouts - stack */
    .split-layout,
    .split-layout-thirds {
        grid-template-columns: 1fr;
    }
    
    /* Section spacing */
    .section {
        padding: 2rem 0;
    }
    
    .section-lg {
        padding: 3rem 0;
    }
    
    .section-xl {
        padding: 4rem 0;
    }
    
    /* Mobile-specific display utilities */
    .mobile-hidden {
        display: none !important;
    }
    
    .mobile-block {
        display: block !important;
    }
    
    /* Gap adjustments */
    .grid,
    .card-grid,
    .card-grid-2,
    .card-grid-3 {
        gap: 1rem;
    }
}

/* ============================================
   TABLET RESPONSIVE (768px - 1024px)
   ============================================ */

@media (min-width: 768px) and (max-width: 1024px) {
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   SMALL MOBILE (< 480px)
   ============================================ */

@media (max-width: 480px) {
    
    html {
        font-size: 14px;
    }
    
    .container,
    .container-fluid,
    .container-narrow {
        padding: 0 1rem;
    }
    
    .app-content {
        padding: 1rem;
    }
    
    /* Even tighter spacing */
    .grid,
    .card-grid {
        gap: 0.75rem;
    }
    
    /* Sections */
    .section {
        padding: 1.5rem 0;
    }
    
    .section-lg {
        padding: 2rem 0;
    }
}

/* ============================================
   DESKTOP WIDE (> 1600px)
   ============================================ */

@media (min-width: 1600px) {
    
    .container {
        max-width: 1600px;
    }
    
    .app-sidebar {
        width: 300px;
    }
    
    .app-content {
        padding: 2.5rem;
    }
}

/* ============================================
   FOOTER STYLES
   ============================================ */

.app-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: 3rem 0 1.5rem 0;
    margin-top: auto;
}

.footer-container {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2rem;
    background: var(--bg-secondary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo {
    width: 32px;
    height: 32px;
}

.footer-brand-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-top: 0.5rem;
}

.footer-section-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    text-align: center;
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-copyright p {
    margin: 0;
}

.footer-legal {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-disclaimer {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    font-style: italic;
}

/* Footer Responsive Styles */
@media (max-width: 768px) {
    .app-footer {
        padding: 2rem 0 1rem 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        gap: 1rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    
    .app-header,
    .app-sidebar,
    .app-footer {
        display: none;
    }
    
    .app-content {
        padding: 0;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
}