/* ==========================================
   GLOBAL VARIABLES & 15-TIER THEME SYSTEM
   ========================================== */
:root {
    /* Base Dimensions */
    --header-height: 60px;
    --footer-height: 40px;
    
    /* Light Mode Fundamentals */
    --bg-light: #F3F4F6;
    --surface-light: #FFFFFF;
    --text-light: #111827;
    --border-light: #E5E7EB;
    
    /* Dark Mode Fundamentals */
    --bg-dark: #111827;
    --surface-dark: #1F2937;
    --text-dark: #F9FAFB;
    --border-dark: #374151;

    /* Default UI Colors (Will be overridden by JS Theme Injector) */
    --app-bg: var(--bg-dark);
    --app-surface: var(--surface-dark);
    --app-text: var(--text-dark);
    --app-border: var(--border-dark);
    --primary-color: #3B82F6; /* Default Blue */
    --error-color: #EF4444;
    --success-color: #10B981;
    --warning-color: #F59E0B;
}

/* Light Mode Overrides */
body[data-theme="light"] {
    --app-bg: var(--bg-light);
    --app-surface: var(--surface-light);
    --app-text: var(--text-light);
    --app-border: var(--border-light);
}

/* ==========================================
   GLOBAL RESETS & TYPOGRAPHY
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--app-bg);
    color: var(--app-text);
    height: 100vh;
    overflow: hidden; /* Prevent scrolling on main body */
}

/* View Containers */
.view-container {
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
}
.view-container.active {
    display: flex;
}

.hidden { display: none !important; }

/* ==========================================
   PRE-LOGIN GATEWAY (Centered Layout)
   ========================================== */
#pre-login-view {
    align-items: center;
    justify-content: center;
}

.auth-gateway {
    background-color: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    margin-bottom: var(--footer-height); /* Offset for footer */
}

.auth-gateway h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--app-text);
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--app-bg);
    border: 1px solid var(--app-border);
    color: var(--app-text);
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--primary-color);
}

.uppercase-input {
    text-transform: uppercase;
}

.btn-primary {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 1rem;
    transition: opacity 0.2s;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
}

.auth-links {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
    font-size: 0.875rem;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}
.auth-links a:hover {
    text-decoration: underline;
}

/* Alert Box */
.alert-box {
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-align: center;
}
.alert-error { background-color: rgba(239, 68, 68, 0.1); border: 1px solid var(--error-color); color: var(--error-color); }
.alert-warning { background-color: rgba(245, 158, 11, 0.1); border: 1px solid var(--warning-color); color: var(--warning-color); }
.alert-success { background-color: rgba(16, 185, 129, 0.1); border: 1px solid var(--success-color); color: var(--success-color); }

/* ==========================================
   PRE-LOGIN FOOTER
   ========================================== */
.pre-login-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--footer-height);
    background-color: var(--app-surface);
    border-top: 1px solid var(--app-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    font-size: 0.75rem;
}

.btn-text {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.75rem;
}
.btn-text:hover {
    text-decoration: underline;
}
/* ==========================================
   MODAL OVERLAYS & GRIDS
   ========================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    padding: 2rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-content.large-modal {
    max-width: 800px;
}

.form-grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Fallback for smaller screens */
@media (max-width: 600px) {
    .form-grid-2col {
        grid-template-columns: 1fr;
    }
    .input-group[style*="grid-column: span 2;"] {
        grid-column: span 1 !important;
    }
}

.tnc-text {
    background-color: var(--app-bg);
    padding: 1rem 1.5rem;
    border-radius: 4px;
    margin: 1rem 0;
    font-size: 0.875rem;
    border: 1px solid var(--app-border);
}

.tnc-text li { margin-bottom: 0.5rem; }

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background-color: transparent;
    color: var(--app-text);
    border: 1px solid var(--app-border);
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.btn-secondary:hover {
    background-color: var(--app-bg);
}

.readonly-input {
    background-color: var(--app-bg) !important;
    color: #9CA3AF !important;
    cursor: not-allowed;
}

.status-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    font-weight: bold;
}
.status-red { color: var(--error-color); }
.status-green { color: var(--success-color); }

/* ==========================================
   POST-LOGIN APP SHELL
   ========================================== */
.app-header {
    height: var(--header-height);
    background-color: var(--app-surface);
    border-bottom: 1px solid var(--app-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-direction: row-reverse; /* Forces right-to-left anchoring */
}

.header-separator {
    color: var(--app-border);
    margin: 0 0.25rem;
    user-select: none;
}

.tool-title {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--app-text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.icon-btn:hover { background-color: var(--app-bg); }
.text-red { color: var(--error-color); }
.text-gold { color: var(--warning-color); }

.theme-btn {
    background: var(--app-bg);
    border: 1px solid var(--app-border);
    color: var(--app-text);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: bold;
}

.session-timer {
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--app-text);
    padding: 0.25rem 0.5rem;
    background: var(--app-bg);
    border-radius: 4px;
    border: 1px solid var(--app-border);
}

.session-timer.warning {
    color: var(--error-color);
    border-color: var(--error-color);
    animation: pulse 1s infinite;
}

.live-clock {
    font-size: 0.85rem;
    color: var(--app-text);
    font-family: monospace;
}

.globe {
    font-size: 1.2rem;
    filter: drop-shadow(0 0 5px var(--success-color));
}
.globe.offline {
    filter: grayscale(100%) drop-shadow(0 0 5px var(--error-color));
    opacity: 0.5;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* --- Sandbox Iframe --- */
.app-main {
    flex-grow: 1;
    width: 100%;
    /* Strict calculation: 100vh minus Header and Footer */
    height: calc(100vh - var(--header-height) - var(--footer-height)); 
    background-color: var(--app-bg);
}

#toolSandbox {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* --- Post-Login Footer --- */
.app-footer {
    height: var(--footer-height);
    background-color: var(--app-surface);
    border-top: 1px solid var(--app-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.support-buttons {
    display: flex;
    gap: 1rem;
}

/* ==========================================
   THEME COLOR BINDINGS (Forces UI to react to Phase 4 Injector)
   ========================================== */

/* The active tool title gets the theme color */
.tool-title { 
    color: var(--primary-color) !important; 
    transition: color 0.3s ease;
}

/* The Theme Cycler button clearly displays the active color */
.theme-btn {
    color: var(--primary-color) !important;
    border: 1px solid var(--primary-color) !important;
    transition: all 0.3s ease;
}

/* Header icons glow with the theme color when hovered */
.icon-btn:hover { 
    color: var(--primary-color) !important; 
}

/* Optional: Make the active background subtle for the theme button */
.theme-btn:hover {
    background-color: var(--primary-color);
    color: #ffffff !important;
}