/*
 * AntiGravity - 스타일시트
 * 운전 중인 CEO를 위한 핸즈프리 AI 영어 튜터
 */

/* ===== CSS 변수 (테마) ===== */
:root {
    /* 색상 */
    --bg-color: #0A0A0A;
    --text-color: #FFFFFF;
    --text-secondary: #A0A0A0;

    /* 상태 색상 */
    --idle-color: #3B82F6;
    --listening-color: #22C55E;
    --speaking-color: #8B5CF6;
    --error-color: #EF4444;
    --connecting-color: #6B7280;

    /* UI */
    --button-bg: rgba(59, 130, 246, 0.8);
    --button-hover: rgba(59, 130, 246, 1);
    --modal-bg: rgba(20, 20, 20, 0.95);
    --border-color: rgba(255, 255, 255, 0.1);

    /* 애니메이션 */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.5s ease;
}

/* ===== 리셋 & 기본 설정 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

/* ===== 앱 컨테이너 ===== */
#app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* ===== 파티클 캔버스 ===== */
#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* ===== 메인 컨텐츠 ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1;
    padding: 20px;
}

/* ===== 파장 시각화 (Wave Canvas) ===== */
.wave-canvas {
    position: absolute;
    width: 100%;
    max-width: 400px;
    height: 100px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -150%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 5;
}

.wave-canvas.active {
    opacity: 1;
}

/* ===== 상태 표시 원 (Orb) ===== */
.status-orb {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-medium);
}

.orb-inner {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%,
        rgba(255, 255, 255, 0.1) 0%,
        transparent 60%);
    border: 2px solid currentColor;
    transition: var(--transition-medium);
}

.orb-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    filter: blur(30px);
    opacity: 0.4;
    transition: var(--transition-medium);
}

/* 상태별 색상 */
.status-orb.idle {
    color: var(--idle-color);
}
.status-orb.idle .orb-glow {
    background: var(--idle-color);
}

.status-orb.connecting {
    color: var(--connecting-color);
}
.status-orb.connecting .orb-glow {
    background: var(--connecting-color);
    animation: pulse 1.5s infinite;
}

.status-orb.listening {
    color: var(--listening-color);
}
.status-orb.listening .orb-glow {
    background: var(--listening-color);
}

.status-orb.speaking {
    color: var(--speaking-color);
}
.status-orb.speaking .orb-glow {
    background: var(--speaking-color);
    animation: speakingPulse 0.8s infinite;
}

.status-orb.error {
    color: var(--error-color);
}
.status-orb.error .orb-glow {
    background: var(--error-color);
}

/* ===== 상태 텍스트 ===== */
.status-text {
    margin-top: 40px;
    text-align: center;
}

#statusLabel {
    font-size: 1.5rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.error-message {
    font-size: 0.875rem;
    color: var(--error-color);
    margin-top: 10px;
    opacity: 0.8;
}

/* ===== 오디오 레벨 바 ===== */
.audio-level-container {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}

.audio-level-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--listening-color), var(--speaking-color));
    border-radius: 2px;
    transition: width 0.1s ease;
}

/* ===== 하단 컨트롤 ===== */
.controls {
    padding: 20px;
    padding-bottom: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    z-index: 1;
}

.control-button {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: var(--button-bg);
    border: none;
    border-radius: 50px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.control-button:hover {
    background: var(--button-hover);
    transform: scale(1.02);
}

.control-button:active {
    transform: scale(0.98);
}

.control-button.active {
    background: var(--error-color);
}

.button-icon {
    font-size: 1.3rem;
}

.settings-button {
    position: absolute;
    right: 20px;
    bottom: 40px;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.settings-button:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== 모달 ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--modal-bg);
    border-radius: 16px;
    padding: 30px;
    width: 90%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.modal-content h2 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.setting-group input[type="password"],
.setting-group input[type="text"] {
    width: 100%;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    font-size: 1rem;
}

.setting-group input[type="range"] {
    width: calc(100% - 40px);
    margin-right: 10px;
}

.setting-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

.setting-hint a {
    color: var(--idle-color);
    text-decoration: none;
}

.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.btn-primary {
    flex: 1;
    padding: 12px;
    background: var(--idle-color);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

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

/* ===== 애니메이션 ===== */
@keyframes pulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

@keyframes speakingPulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

/* ===== 반응형 ===== */
@media (max-width: 480px) {
    .status-orb {
        width: 160px;
        height: 160px;
    }

    .orb-inner {
        width: 144px;
        height: 144px;
    }

    #statusLabel {
        font-size: 1.25rem;
    }

    .control-button {
        padding: 14px 32px;
        font-size: 1rem;
    }
}

/* ===== 디버그 로그 ===== */
.debug-log {
    position: fixed;
    bottom: 100px;
    left: 10px;
    right: 10px;
    max-height: 150px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    font-family: monospace;
    font-size: 0.7rem;
    color: #00ff00;
    z-index: 50;
    display: none;
}

.debug-log.visible {
    display: block;
}

.debug-log .log-entry {
    margin-bottom: 4px;
    word-break: break-all;
}

.debug-log .log-error {
    color: #ff4444;
}

.debug-log .log-warn {
    color: #ffaa00;
}

/* ===== 세이프 에어리어 (노치 대응) ===== */
@supports (padding-top: env(safe-area-inset-top)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
}