:root {
    --bg:          #1a1a2e;
    --bg2:         #16213e;
    --bg3:         #0f3460;
    --accent:      #e94560;
    --accent2:     #f5a623;
    --green:       #4ecca3;
    --text:        #eaeaea;
    --text-dim:    #888;
    --border:      #2a2a4a;
    --screen-bg:   #0d1b2a;
    --screen-glow: rgba(78, 204, 163, 0.15);
    --font-pixel:  'Courier New', Courier, monospace;
    --radius:      8px;
    --shadow:      0 4px 24px rgba(0,0,0,0.5);
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-pixel);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen {
    display: none;
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}
.screen.active { display: block; }

.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.card h1 {
    font-size: 1.4rem;
    color: var(--green);
    text-align: center;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.form-group input {
    width: 100%;
    background: var(--screen-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.6rem 0.8rem;
    color: var(--text);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--green);
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: opacity 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--accent);
    color: #fff;
    width: 100%;
    text-align: center;
    padding: 0.7rem;
    margin-top: 0.5rem;
}
.btn-primary:hover { opacity: 0.85; }
.btn-secondary {
    background: var(--bg3);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover { opacity: 0.85; }
.btn-green {
    background: var(--green);
    color: var(--bg);
}
.btn-green:hover { opacity: 0.85; }

.form-switch {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}
.form-switch a {
    color: var(--green);
    cursor: pointer;
    text-decoration: underline;
}

.error-msg {
    background: rgba(233,69,96,0.12);
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 0.5rem 0.8rem;
    color: var(--accent);
    font-size: 0.8rem;
    margin-bottom: 0.8rem;
    display: none;
}
.error-msg.visible { display: block; }

.toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--bg3);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
    transition: transform 0.3s ease;
    z-index: 999;
    white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error   { border-color: var(--accent); color: var(--accent); }

.hidden { display: none !important; }

.logout-btn {
    position: fixed;
    top: 0.8rem;
    right: 0.8rem;
    font-size: 0.7rem;
    color: var(--text-dim);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg2);
}
.logout-btn:hover { color: var(--accent); border-color: var(--accent); }