/* ==========================================================================
   DEFNE SANDBOX - ACADEMIC MINIMALIST STYLES (css/main.css)
   ========================================================================== */

/* Design Tokens & CSS Variables - Academic Precision Theme */
:root {
    /* Color Palette */
    --color-bg-base: #f8fafc;       /* Off-white background */
    --color-bg-panel: #ffffff;      /* Pure white panels */
    --color-text-main: #0f172a;     /* Deep slate text */
    --color-text-muted: #475569;    /* Muted slate text */
    --color-border-clean: #cbd5e1;  /* Light slate borders */
    --color-border-active: #0f172a;  /* High contrast active border */
    
    /* Accents (Muted & Scientific) */
    --color-primary: #334155;       /* Slate primary */
    --color-success: #15803d;       /* Forest green */
    --color-warning: #b45309;       /* Dark amber */
    --color-danger: #b91c1c;        /* Dark crimson */
    
    /* Typography */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing & Borders */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset and base configurations */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    font-family: var(--font-body);
    font-size: 13px;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Hide glowing backgrounds */
.glow-bg {
    display: none !important;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Layout Grid */
.app-container {
    display: grid;
    grid-template-rows: 56px 1fr 200px;
    width: 100vw;
    height: 100vh;
    padding: 16px;
    gap: 16px;
    position: relative;
}

/* Academic Panel */
.glass-panel {
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border-clean);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.02);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* HEADER STYLING */
.app-header {
    grid-row: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-border-clean);
    border-radius: var(--radius-md);
    padding: 0 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-icon {
    filter: none;
}
.logo-icon stroke {
    stroke: var(--color-text-main) !important;
}
.logo-text {
    display: flex;
    flex-direction: column;
}
.logo-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-text-main);
}
.logo-subtitle {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Header Statistics Bar */
.header-stats {
    display: flex;
    gap: 24px;
}
.stat-box {
    display: flex;
    flex-direction: column;
    min-width: 90px;
    border-left: 1px solid var(--color-border-clean);
    padding-left: 12px;
}
.stat-box:hover {
    border-left-color: var(--color-border-active);
}
.stat-label {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
}
.stat-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-main);
    margin-top: 1px;
}

/* Global Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}
.speed-control {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f1f5f9;
    border: 1px solid var(--color-border-clean);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}
.speed-control label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
}
.speed-control input[type="range"] {
    width: 60px;
    accent-color: var(--color-border-active);
    cursor: pointer;
}
#speed-val {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-main);
}

/* Locale Switcher — single trigger + flag dropdown */
.locale-switcher {
    position: relative;
    display: inline-block;
}
.locale-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--color-border-clean);
    background: #f1f5f9;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-text-main);
}
.locale-trigger:hover { background: rgba(0,0,0,0.04); }
.locale-flag { font-size: 1rem; line-height: 1; }
.locale-flag img.emoji { width: 1rem; height: 1rem; vertical-align: middle; }
.locale-caret { font-size: 0.7rem; opacity: 0.55; margin-left: 2px; }
.locale-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    margin: 0;
    padding: 4px;
    list-style: none;
    background: #fff;
    border: 1px solid var(--color-border-clean);
    border-radius: var(--radius-sm);
    box-shadow: 0 6px 18px rgba(15,23,42,0.12);
    min-width: 160px;
    z-index: 1000;
    max-height: 320px;
    overflow-y: auto;
}
.locale-menu.hidden { display: none; }
.locale-menu .lang-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 10px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--color-text-main);
    font-size: 0.82rem;
    transition: background 0.12s ease;
}
.locale-menu .lang-btn:hover { background: rgba(92,128,96,0.08); }
.locale-menu .lang-btn.active { background: rgba(92,128,96,0.14); font-weight: 600; }
.locale-menu .locale-name { flex: 1; }

/* APP BODY WRAPPER */
.app-body {
    grid-row: 2;
    display: grid;
    grid-template-columns: 260px 1fr 290px;
    gap: 16px;
    height: 100%;
    min-height: 0;
}

/* Panel Header Component */
.panel-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border-clean);
    background: #f8fafc;
}
.panel-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-text-main);
}
.panel-desc {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* BUTTONS - Flat Academic Styling */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid var(--color-border-clean);
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    outline: none;
    white-space: nowrap;
    background: var(--color-bg-panel);
    color: var(--color-text-main);
}
.btn-primary {
    background: var(--color-border-active);
    color: #ffffff;
    border-color: var(--color-border-active);
    box-shadow: none;
}
.btn-primary:hover {
    background: #334155;
    border-color: #334155;
    transform: none;
    box-shadow: none;
}
.btn-secondary {
    background: #ffffff;
    color: var(--color-text-main);
}
.btn-secondary:hover {
    background: #f1f5f9;
    border-color: #94a3b8;
    transform: none;
}
.btn-danger {
    background: #ffffff;
    color: var(--color-danger);
    border-color: var(--color-danger);
}
.btn-danger:hover {
    background: #fef2f2;
    transform: none;
}
.btn-full {
    width: 100%;
}
.hidden {
    display: none !important;
}