/* ==========================================================================
   SIMTRADE SIMULATION HUB DESIGN SYSTEM (style.css)
   ========================================================================== */

/* Design Tokens & Theme Variables */
:root {
    --color-bg-base: #F8F9FC;
    --color-surface: #FFFFFF;
    --color-border-light: #EEF2F6;
    --color-border-hover: #CBD5E1;
    --color-text-title: #0F172A;
    --color-text-body: #475569;
    --color-text-muted: #94A3B8;
    
    /* Branding Colors */
    --color-primary: #0F172A;
    --color-accent-blue: #3B82F6;
    --color-accent-blue-hover: #2563EB;
    --color-accent-blue-bg: #EFF6FF;
    --color-accent-blue-text: #1D4ED8;
    
    --color-accent-orange: #F97316;
    --color-accent-orange-bg: #FFF7ED;
    --color-accent-orange-text: #C2410C;
    
    --color-accent-purple: #8B5CF6;
    --color-accent-purple-bg: #F5F3FF;
    --color-accent-purple-text: #6D28D9;
    
    --color-accent-green: #10B981;
    --color-accent-green-bg: #ECFDF5;
    --color-accent-green-text: #047857;
    
    --color-accent-slate: #64748B;
    --color-accent-slate-bg: #F1F5F9;
    --color-accent-slate-text: #475569;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-serif: 'Lora', Georgia, Cambria, "Times New Roman", Times, serif;
    --font-mono: 'Fira Code', 'JetBrains Mono', monospace;
    
    --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.02), 0 2px 8px -1px rgba(15, 23, 42, 0.01);
    --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.03), 0 1px 8px rgba(15, 23, 42, 0.01);
    --shadow-card-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.06), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    
    --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-quick: all 0.15s ease;
}

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

body {
    background-color: var(--color-bg-base);
    color: var(--color-text-body);
    font-family: var(--font-sans);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Base Layout Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem 6rem 1.5rem;
}

/* Header Styling */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1.5px solid var(--color-border-light);
    padding-bottom: 2rem;
    margin-bottom: 3.5rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon-box {
    background-color: var(--color-primary);
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15);
}

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

.logo-title {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-title);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.logo-subtitle {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.15em;
    margin-top: 0.15rem;
}

.status-badge-container {
    display: flex;
    align-items: center;
}

.status-pill {
    background-color: var(--color-surface);
    border: 1.2px solid var(--color-border-light);
    border-radius: 9999px;
    padding: 0.5rem 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    box-shadow: var(--shadow-subtle);
    transition: var(--transition-quick);
}

.status-pill:hover {
    border-color: var(--color-border-hover);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-accent-green);
    display: inline-block;
}

.status-dot.pulsing {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
    animation: statusPulse 2s infinite;
}

.status-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-title);
}

/* Section Title */
.modules-section {
    width: 100%;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.15rem;
    font-weight: 700;
    color: var(--color-text-title);
    margin-bottom: 2.5rem;
    letter-spacing: -0.2px;
}

/* Simulation Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
    }
}

/* Card Styling */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 24px;
    padding: 2.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    box-shadow: var(--shadow-card);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-border-hover);
}

/* Active Highlight Card Styling (News Card 06 in screenshot) */
.card.active-card {
    border: 1.5px solid var(--color-accent-blue);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.08), 0 1px 8px rgba(59, 130, 246, 0.02);
}

.card.active-card:hover {
    border-color: var(--color-accent-blue-hover);
    box-shadow: 0 18px 35px rgba(59, 130, 246, 0.12), 0 4px 12px rgba(59, 130, 246, 0.04);
}

.card-index {
    position: absolute;
    top: 2.25rem;
    right: 2.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.card-top {
    margin-bottom: 2rem;
    display: flex;
}

/* Card Icons */
.card-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-blue {
    background-color: var(--color-accent-blue-bg);
    color: var(--color-accent-blue);
}

.color-orange {
    background-color: var(--color-accent-orange-bg);
    color: var(--color-accent-orange);
}

.color-purple {
    background-color: var(--color-accent-purple-bg);
    color: var(--color-accent-purple);
}

.color-green {
    background-color: var(--color-accent-green-bg);
    color: var(--color-accent-green);
}

.color-slate {
    background-color: var(--color-accent-slate-bg);
    color: var(--color-accent-slate-text);
}

/* Card Content styling */
.card-content {
    flex-grow: 1;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.45rem;
    font-weight: 600;
    color: var(--color-text-title);
    margin-bottom: 0.85rem;
    letter-spacing: -0.1px;
}

.card-description {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text-body);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

/* Card Footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border-light);
    padding-top: 1.25rem;
    margin-top: auto;
}

.card-badge {
    font-family: var(--font-sans);
    font-size: 0.725rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    display: inline-block;
}

.badge-strategy {
    background-color: var(--color-accent-blue-bg);
    color: var(--color-accent-blue-text);
}

.badge-technical {
    background-color: var(--color-accent-green-bg);
    color: var(--color-accent-green-text);
}

.badge-celestial {
    background-color: var(--color-accent-purple-bg);
    color: var(--color-accent-purple-text);
}

.badge-momentum {
    background-color: var(--color-accent-green-bg);
    color: var(--color-accent-green-text);
}

.badge-news {
    background-color: var(--color-accent-slate-bg);
    color: var(--color-accent-slate-text);
}

.badge-analysis {
    background-color: var(--color-accent-slate-bg);
    color: var(--color-accent-slate-text);
}

/* Action Trigger Links */
.card-action {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-title);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0;
    transition: var(--transition-quick);
}

.card-action span {
    position: relative;
}

.card-action .chevron {
    transition: transform 0.2s ease;
}

.card-action:hover {
    color: var(--color-text-title);
}

.card-action:hover .chevron {
    transform: translateX(3px);
}

/* Highlighted Action style (News open feed) */
.card-action.action-blue {
    color: var(--color-accent-blue);
}

.card-action.action-blue:hover {
    color: var(--color-accent-blue-hover);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

@keyframes statusPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}