/* =====================================================
   CLASSIFIED - Layout & Structure
   App container, header, navigation, grid systems
   ===================================================== */

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex; /* Add: Make body flex container */
    justify-content: center; /* Add: Center children */
}

.app-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    background: var(--bg-card);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

/* ===== HEADER STYLES ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(20px);
    position: fixed; /* Change: Use fixed */
    top: 0;
    left: 50%; /* Add: Center positioning */
    transform: translateX(-50%); /* Add: Center positioning */
    z-index: var(--z-sticky);
    border-bottom: 1px solid var(--border-light);
    height: var(--header-height);
    width: 100%;
    max-width: var(--container-max); /* Add: Match container max-width */
    box-sizing: border-box;
}

.back-btn,
.settings-btn,
.map-trigger-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--text-xl);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-circle);
    transition: all var(--transition-base);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-btn {
    color: var(--accent-gold);
}

.back-btn:hover {
    background: rgba(255,215,0,0.1);
}

.settings-btn:hover,
.map-trigger-btn:hover {
    background: var(--border-light);
}

.header-title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    text-align: center;
    flex: 1;
}

.match-badge {
    background: var(--info-bg);
    color: var(--info);
    padding: 6px var(--spacing-sm);
    border-radius: var(--radius-pill);
    font-size: var(--text-sm);
    border: 1px solid var(--info-border);
    font-weight: var(--weight-semibold);
}

/* Guest Mode Banner */
.guest-banner {
    background: linear-gradient(135deg, var(--accent-gold), #FF6B6B);
    padding: 12px 20px;
    text-align: center;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}
.guest-banner:hover {
    background: linear-gradient(135deg, #FF6B6B, var(--accent-gold));
}

/* Main Screen Container */
.main-screens {
    position: relative;
    flex: 1; /* Add: Allow to grow */
    overflow-y: auto; /* Add: Make this the scroll container */
    overflow-x: hidden; /* Add: Prevent horizontal scroll */
    padding-top: var(--header-height); /* Add: Offset for fixed header */
    padding-bottom: 100px; /* Keep for bottom nav */
    -webkit-overflow-scrolling: touch; /* Add: Smooth iOS scrolling */
}
.screen {
    display: none;
    animation: slideIn 0.3s ease;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    box-sizing: border-box;
}
.screen.active {
    display: block;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 100%;
    max-width: 430px;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(20px);
    padding: var(--spacing-md) 20px;
    display: flex;
    justify-content: space-around;
    border-top: 1px solid var(--border-light);
    z-index: 150;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    min-width: 70px;
}
.nav-item:hover {
    background: var(--border-light);
    transform: translateY(-2px);
}
.nav-item.active {
    background: linear-gradient(135deg, #FF6B6B, #FF8C42);
    transform: translateY(-2px);
}
.nav-icon {
    font-size: 20px;
    margin-bottom: 4px;
}
.nav-label {
    font-size: 10px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Force navigation to always show */
.bottom-nav {
    display: flex !important;
}