/* Kit Voice — Dark theme, TAC brand */
/* Brand: primary #0f172a, accent #10b981, CTA #f97316, text #f1f5f9, border #334155 */
/* Font: Atkinson Hyperlegible Next (Google Fonts) */

@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible+Next:wght@400;700&display=swap');

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

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --accent: #10b981;
    --accent-dim: rgba(16, 185, 129, 0.15);
    --accent-glow: rgba(16, 185, 129, 0.3);
    --cta: #f97316;
    --text: #f1f5f9;
    --text-dim: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --danger: #ef4444;
    --font: 'Atkinson Hyperlegible Next', system-ui, sans-serif;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text);
    font-size: 15px;
    line-height: 1.55;
    display: flex;
    flex-direction: column;
}

/* --- Login Screen --- */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    padding: 1rem;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 360px;
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--accent);
}

.login-card p {
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.login-card input {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
}

.login-card input:focus {
    outline: none;
    border-color: var(--accent);
}

.login-card button {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: var(--bg-primary);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.2s;
}

.login-card button:hover {
    opacity: 0.9;
}

.login-error {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    min-height: 1.2em;
}

/* --- Voice App --- */
.voice-app {
    display: none;
    flex-direction: column;
    height: 100vh;
}

.voice-app.active {
    display: flex;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

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

.app-header .brand-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.app-header .brand-name span {
    color: var(--accent);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    flex-shrink: 0;
}

.status-dot.connected {
    background: var(--accent);
}

.status-dot.error {
    background: var(--danger);
}

.btn-logout {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-family: var(--font);
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-logout:hover {
    border-color: var(--text-muted);
    color: var(--text);
}

/* Transcript area */
.transcript {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.5;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    align-self: flex-end;
    background: var(--accent-dim);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--text);
}

.message.assistant {
    align-self: flex-start;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
}

.message .label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.message.assistant .label {
    color: var(--accent);
}

/* Avatar + controls area */
.controls {
    flex-shrink: 0;
    padding: 1.25rem;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

/* Kit avatar */
.avatar-container {
    width: 80px;
    height: 80px;
    position: relative;
}

.avatar-ring {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid var(--border);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.avatar-ring.listening {
    border-color: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
    animation: pulse 1.5s ease-in-out infinite;
}

.avatar-ring.thinking {
    border-color: var(--cta);
    box-shadow: 0 0 16px rgba(249, 115, 22, 0.3);
    animation: spin 2s linear infinite;
}

.avatar-ring.speaking {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    animation: breathe 0.8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.06); opacity: 0.8; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.04); }
}

.avatar-svg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
}

/* Push-to-talk button */
.ptt-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    max-width: 400px;
}

.btn-ptt {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: var(--accent-dim);
    color: var(--accent);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.btn-ptt:hover {
    background: rgba(16, 185, 129, 0.25);
}

.btn-ptt.active {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-ptt.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Text input */
.text-input-row {
    flex: 1;
    display: flex;
    gap: 0.5rem;
}

.text-input-row input {
    flex: 1;
    padding: 0.65rem 1rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--bg-primary);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
}

.text-input-row input:focus {
    outline: none;
    border-color: var(--accent);
}

.text-input-row button {
    padding: 0.65rem 1rem;
    border: none;
    border-radius: 24px;
    background: var(--accent);
    color: var(--bg-primary);
    font-family: var(--font);
    font-weight: 700;
    cursor: pointer;
    font-size: 0.9rem;
}

.text-input-row button:hover {
    opacity: 0.9;
}

.text-input-row button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Status line */
.status-line {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    min-height: 1.1em;
}

/* --- Responsive --- */
@media (max-width: 600px) {
    .app-header {
        padding: 0.5rem 1rem;
    }

    .transcript {
        padding: 1rem;
    }

    .message {
        max-width: 92%;
    }

    .controls {
        padding: 1rem;
    }

    .avatar-container {
        width: 64px;
        height: 64px;
    }

    .avatar-svg {
        width: 64px;
        height: 64px;
    }

    .btn-ptt {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
}

/* Scrollbar */
.transcript::-webkit-scrollbar {
    width: 6px;
}

.transcript::-webkit-scrollbar-track {
    background: transparent;
}

.transcript::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Hidden */
.hidden {
    display: none !important;
}