/* ===== 賽博龐克生日卡片 - CSS 樣式文件 ===== */

/* CSS 變數定義 */
:root {
    --cyber-pink: #ff0080;
    --cyber-cyan: #00ffff;
    --cyber-purple: #8000ff;
    --cyber-green: #00ff41;
    --cyber-yellow: #ffff00;
    --dark-bg: #0a0a0f;
    --dark-surface: #151520;
    --pixel-size: 2px;
}

/* 基礎重置和設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background: var(--dark-bg);
    color: var(--cyber-cyan);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

/* ===== 背景效果 ===== */

/* 賽博龐克網格背景 */
.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: 1;
    animation: gridMove 10s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

/* 掃描線效果 */
.scan-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        transparent 50%, 
        rgba(0, 255, 255, 0.03) 50%
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 2;
    animation: scanMove 0.1s linear infinite;
}

@keyframes scanMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

/* 像素粒子系統 */
.pixel-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
}

.pixel-particle {
    position: absolute;
    width: var(--pixel-size);
    height: var(--pixel-size);
    background: var(--cyber-cyan);
    box-shadow: 0 0 10px currentColor;
}

/* ===== 故障效果 ===== */

.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch::before {
    color: var(--cyber-pink);
    animation: glitch1 2s infinite linear alternate-reverse;
}

.glitch::after {
    color: var(--cyber-cyan);
    animation: glitch2 2s infinite linear alternate-reverse;
}

@keyframes glitch1 {
    0% { clip: rect(42px, 9999px, 44px, 0); }
    5% { clip: rect(12px, 9999px, 59px, 0); }
    10% { clip: rect(48px, 9999px, 29px, 0); }
    15% { clip: rect(42px, 9999px, 73px, 0); }
    20% { clip: rect(63px, 9999px, 27px, 0); }
    25% { clip: rect(34px, 9999px, 55px, 0); }
    30% { clip: rect(86px, 9999px, 73px, 0); }
    35% { clip: rect(20px, 9999px, 20px, 0); }
    40% { clip: rect(26px, 9999px, 60px, 0); }
    45% { clip: rect(25px, 9999px, 85px, 0); }
    50% { clip: rect(57px, 9999px, 32px, 0); }
    55% { clip: rect(5px, 9999px, 46px, 0); }
    60% { clip: rect(82px, 9999px, 31px, 0); }
    65% { clip: rect(54px, 9999px, 27px, 0); }
    70% { clip: rect(28px, 9999px, 99px, 0); }
    75% { clip: rect(45px, 9999px, 69px, 0); }
    80% { clip: rect(23px, 9999px, 85px, 0); }
    85% { clip: rect(54px, 9999px, 84px, 0); }
    90% { clip: rect(45px, 9999px, 47px, 0); }
    95% { clip: rect(37px, 9999px, 20px, 0); }
    100% { clip: rect(4px, 9999px, 91px, 0); }
}

@keyframes glitch2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    5% { clip: rect(52px, 9999px, 74px, 0); }
    10% { clip: rect(79px, 9999px, 85px, 0); }
    15% { clip: rect(75px, 9999px, 5px, 0); }
    20% { clip: rect(67px, 9999px, 61px, 0); }
    25% { clip: rect(14px, 9999px, 79px, 0); }
    30% { clip: rect(1px, 9999px, 66px, 0); }
    35% { clip: rect(86px, 9999px, 30px, 0); }
    40% { clip: rect(23px, 9999px, 98px, 0); }
    45% { clip: rect(85px, 9999px, 72px, 0); }
    50% { clip: rect(71px, 9999px, 75px, 0); }
    55% { clip: rect(2px, 9999px, 48px, 0); }
    60% { clip: rect(30px, 9999px, 16px, 0); }
    65% { clip: rect(59px, 9999px, 50px, 0); }
    70% { clip: rect(41px, 9999px, 33px, 0); }
    75% { clip: rect(65px, 9999px, 69px, 0); }
    80% { clip: rect(49px, 9999px, 85px, 0); }
    85% { clip: rect(31px, 9999px, 7px, 0); }
    90% { clip: rect(68px, 9999px, 95px, 0); }
    95% { clip: rect(41px, 9999px, 76px, 0); }
    100% { clip: rect(82px, 9999px, 90px, 0); }
}

/* ===== 載入畫面 ===== */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    font-family: 'JetBrains Mono', monospace;
}

.loading-text {
    color: var(--cyber-green);
    font-size: 1rem;
    margin-bottom: 20px;
    text-align: center;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: var(--dark-surface);
    border: 1px solid var(--cyber-cyan);
    position: relative;
    overflow: hidden;
}

.loading-fill {
    height: 100%;
    background: var(--cyber-cyan);
    width: 0%;
    box-shadow: 0 0 10px var(--cyber-cyan);
    animation: loadingFill 3s ease-out forwards;
}

@keyframes loadingFill {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ===== 登入介面 ===== */

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.terminal-window {
    background: rgba(21, 21, 32, 0.95);
    border: 2px solid var(--cyber-cyan);
    border-radius: 0;
    box-shadow: 0 0 30px var(--cyber-cyan), inset 0 0 30px rgba(0, 255, 255, 0.1);
    padding: 20px;
    width: 100%;
    max-width: 400px;
    position: relative;
    font-family: 'JetBrains Mono', monospace;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--cyber-cyan);
}

.terminal-title {
    color: var(--cyber-green);
    font-size: 0.9rem;
    font-weight: 700;
}

.terminal-controls {
    display: flex;
    gap: 5px;
}

.terminal-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.terminal-dot.close { background: var(--cyber-pink); }
.terminal-dot.minimize { background: var(--cyber-yellow); }
.terminal-dot.maximize { background: var(--cyber-green); }

.login-title {
    font-family: 'Orbitron', monospace;
    font-size: 2rem;
    font-weight: 900;
    color: var(--cyber-pink);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px var(--cyber-pink);
}

.login-subtitle {
    font-size: 0.8rem;
    color: var(--cyber-green);
    margin-bottom: 30px;
    opacity: 0.8;
    font-family: 'JetBrains Mono', monospace;
}

.command-line {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.9rem;
    position: relative;
}

.prompt {
    color: var(--cyber-green);
    margin-right: 10px;
    white-space: nowrap;
}

.password-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--cyber-cyan);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    outline: none;
    padding: 5px 0;
    border-bottom: 1px solid var(--cyber-cyan);
    position: relative;
}

.password-input::placeholder {
    color: rgba(0, 255, 255, 0.5);
}

/* 移除固定的 cursor，改用 CSS 來實現游標效果 */
.password-input {
    caret-color: var(--cyber-cyan);
}

/* 為輸入框添加發光效果 */
.password-input:focus {
    box-shadow: 0 2px 0 var(--cyber-cyan);
    caret-color: var(--cyber-cyan);
}

/* 如果需要自定義游標樣式 */
.password-input:focus::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--cyber-cyan);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 2px solid var(--cyber-pink);
    color: var(--cyber-pink);
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--cyber-pink), transparent);
    opacity: 0.3;
    transition: left 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    background: var(--cyber-pink);
    color: var(--dark-bg);
    box-shadow: 0 0 20px var(--cyber-pink);
    text-shadow: none;
}

.submit-btn:active {
    transform: translateY(0) scale(0.98);
}

.submit-btn.processing {
    pointer-events: none;
    background: var(--cyber-pink);
    color: var(--dark-bg);
    animation: processingPulse 0.8s ease-in-out infinite;
}

.submit-btn.processing::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid var(--dark-bg);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 1s linear infinite;
}


@keyframes processingPulse {
    0%, 100% { box-shadow: 0 0 20px var(--cyber-pink); }
    50% { box-shadow: 0 0 40px var(--cyber-pink), 0 0 60px rgba(255, 0, 128, 0.5); }
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== 信封設計 ===== */

.card-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20;
    padding: 20px;
    overflow-y: auto;
}

.card-container.show {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.envelope-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 400px;
    position: relative;
}

.cyber-envelope {
    position: relative;
    width: 320px;
    height: 200px;
    margin: 20px auto;
    cursor: pointer;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.envelope-base {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 140px;
    background: var(--dark-surface);
    border: 2px solid var(--cyber-cyan);
    box-shadow: 
        0 0 20px var(--cyber-cyan),
        inset 0 0 20px rgba(0, 255, 255, 0.1);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.envelope-base::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 0%, 
        rgba(0, 255, 255, 0.1) 25%, 
        transparent 50%, 
        rgba(255, 0, 128, 0.1) 75%, 
        transparent 100%);
    animation: dataFlow 3s linear infinite;
}

@keyframes dataFlow {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.envelope-flap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    overflow: hidden;
    transform-origin: bottom center;
    transition: transform 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 5;
}

.envelope-flap::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-left: 160px solid var(--dark-surface);
    border-right: 160px solid var(--dark-surface);
    border-top: 100px solid var(--dark-surface);
    border-bottom: 2px solid var(--cyber-cyan);
    box-shadow: 0 0 20px var(--cyber-cyan);
}

.cyber-envelope.open .envelope-flap {
    transform: rotateX(-180deg);
}

/* 數位愛心印章 */
.digital-heart {
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    z-index: 10;
    cursor: pointer;
    color: var(--cyber-pink);
    text-shadow: 0 0 20px var(--cyber-pink);
    font-family: 'JetBrains Mono', monospace;
}

.digital-heart::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border: 1px solid var(--cyber-pink);
    transform: translate(-50%, -50%) rotate(45deg);
    animation: scanBox 2s ease-in-out infinite;
}

@keyframes scanBox {
    0%, 100% { 
        transform: translate(-50%, -50%) rotate(45deg) scale(1); 
        opacity: 0.5; 
    }
    50% { 
        transform: translate(-50%, -50%) rotate(45deg) scale(1.5); 
        opacity: 1; 
    }
}

/* ===== 終端機卡片 - 精緻版 ===== */

.digital-card {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f0f1a 100%);
    z-index: 100;
    display: none;
    padding: 15px;
    overflow-y: auto;
}

.digital-card.show {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 20px;
}

.card-terminal {
    background: rgba(21, 21, 32, 0.3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 16px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 0 40px rgba(0, 255, 255, 0.1);
    width: 100%;
    max-width: 450px;
    position: relative;
    font-family: 'JetBrains Mono', monospace;
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.card-terminal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(0, 255, 255, 0.1) 0%,
        transparent 50%,
        rgba(255, 0, 128, 0.1) 100%);
    border-radius: 16px;
    pointer-events: none;
}

.card-terminal::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    right: 1px;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    border-radius: 16px 16px 0 0;
}

.card-terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    border-bottom: 2px solid var(--cyber-cyan);
    background: linear-gradient(90deg, 
        rgba(0, 255, 255, 0.1) 0%, 
        rgba(255, 0, 128, 0.05) 50%, 
        rgba(0, 255, 255, 0.1) 100%);
    position: relative;
}

.card-terminal-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyber-cyan), transparent);
    animation: headerScan 2s ease-in-out infinite;
}

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

.terminal-tab {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tab-icon {
    width: 10px;
    height: 10px;
    background: var(--cyber-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--cyber-green);
    animation: statusBlink 3s infinite;
    position: relative;
}

.tab-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 4px;
    height: 4px;
    background: #ffffff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

@keyframes statusBlink {
    0%, 90% { opacity: 1; }
    95% { opacity: 0.3; }
}

.tab-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--cyber-cyan);
    font-weight: 700;
    text-shadow: 0 0 5px var(--cyber-cyan);
}

.terminal-status {
    font-size: 0.75rem;
    color: var(--cyber-green);
    font-family: 'JetBrains Mono', monospace;
    padding: 4px 8px;
    background: rgba(0, 255, 65, 0.1);
    border-radius: 4px;
    border: 1px solid rgba(0, 255, 65, 0.3);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 255, 65, 0.3); }
    50% { box-shadow: 0 0 15px rgba(0, 255, 65, 0.6); }
}

.card-content-area {
    flex: 1;
    padding: 25px;
    background: var(--dark-surface);
    position: relative;
    overflow-y: auto;
}

.card-content-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 255, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 0, 128, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.code-line {
    margin-bottom: 6px;
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--cyber-cyan);
    opacity: 0;
    transform: translateX(-20px);
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
    padding: 2px 0;
}

.code-line:hover {
    background: rgba(0, 255, 255, 0.05);
    border-radius: 4px;
    padding: 2px 8px;
    transition: all 0.2s ease;
}

.code-line-number {
    display: inline-block;
    width: 30px;
    color: rgba(0, 255, 255, 0.4);
    font-size: 0.75rem;
    margin-right: 15px;
    text-align: right;
    user-select: none;
    position: relative;
}

.code-line-number::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    width: 2px;
    height: 14px;
    background: rgba(0, 255, 255, 0.2);
    transform: translateY(-50%);
}

.terminal-prompt {
    display: flex;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid rgba(0, 255, 255, 0.3);
    position: relative;
}

.terminal-prompt::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--cyber-green);
    box-shadow: 0 0 10px var(--cyber-green);
}

.prompt-symbol {
    color: var(--cyber-green);
    margin-right: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    text-shadow: 0 0 8px var(--cyber-green);
}

.prompt-text {
    color: var(--cyber-cyan);
    font-size: 0.85rem;
}

.terminal-cursor {
    display: inline-block;
    width: 10px;
    height: 18px;
    background: var(--cyber-cyan);
    margin-left: 8px;
    animation: cursorBlink 1.2s infinite;
    box-shadow: 0 0 8px var(--cyber-cyan);
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.2; }
}

.close-terminal-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    width: 28px;
    height: 28px;
    background: transparent;
    border: 2px solid var(--cyber-pink);
    color: var(--cyber-pink);
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    border-radius: 4px;
    z-index: 999;
}

.close-terminal-btn:hover {
    background: var(--cyber-pink);
    color: var(--dark-bg);
    box-shadow: 0 0 15px var(--cyber-pink);
    transform: scale(1.1);
}

.close-terminal-btn:active {
    transform: scale(0.95);
}

/* 終端機掃描線增強 */
.terminal-scanlines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(transparent 50%, rgba(0, 255, 255, 0.02) 50%),
        linear-gradient(90deg, transparent 98%, rgba(0, 255, 255, 0.03) 100%);
    background-size: 100% 2px, 2px 100%;
    pointer-events: none;
    animation: scanMove 0.1s linear infinite;
}

/* 程式碼語法高亮增強 */
.syntax-string { 
    color: var(--cyber-yellow); 
    text-shadow: 0 0 3px var(--cyber-yellow);
}

.syntax-comment { 
    color: var(--cyber-green); 
    opacity: 0.85;
    /* font-style: italic; */
}

.syntax-keyword { 
    color: var(--cyber-pink); 
    font-weight: 700;
    text-shadow: 0 0 3px var(--cyber-pink);
}

.syntax-function { 
    color: var(--cyber-cyan); 
    font-weight: 700;
    text-shadow: 0 0 3px var(--cyber-cyan);
}

.syntax-variable { 
    color: var(--cyber-purple);
    font-weight: 500;
}

.syntax-operator { 
    color: #ffffff; 
    font-weight: 600;
}

.syntax-number { 
    color: var(--cyber-yellow);
    font-weight: 600;
}

/* 特殊程式碼行效果 */
.code-line.highlight {
    background: linear-gradient(90deg, 
        rgba(255, 0, 128, 0.1), 
        rgba(255, 0, 128, 0.05), 
        rgba(255, 0, 128, 0.1));
    border-left: 3px solid var(--cyber-pink);
    padding-left: 12px;
    animation: highlightGlow 2s ease-in-out infinite;
}

@keyframes highlightGlow {
    0%, 100% { box-shadow: inset 0 0 10px rgba(255, 0, 128, 0.2); }
    50% { box-shadow: inset 0 0 20px rgba(255, 0, 128, 0.4); }
}

/* 程式碼完成效果 */
.code-complete-effect {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(0, 255, 255, 0.1) 50%, 
        transparent 70%);
    opacity: 0;
    animation: codeComplete 1.5s ease-out;
}

@keyframes codeComplete {
    0% { 
        opacity: 0; 
        transform: translateX(-100%); 
    }
    50% { 
        opacity: 1; 
        transform: translateX(0%); 
    }
    100% { 
        opacity: 0; 
        transform: translateX(100%); 
    }
}

/* ===== 指示文字和錯誤訊息 ===== */

.cyber-instruction {
    text-align: center;
    color: var(--cyber-green);
    font-size: 0.8rem;
    margin-top: 20px;
    font-family: 'JetBrains Mono', monospace;
    opacity: 0.8;
}

.cyber-instruction::before {
    content: '> ';
    color: var(--cyber-cyan);
}

.cyber-instruction.hidden {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.error-message {
    color: var(--cyber-pink);
    font-size: 0.8rem;
    margin-top: 10px;
    opacity: 0;
    transition: all 0.3s ease;
    font-family: 'JetBrains Mono', monospace;
}

.error-message.show {
    opacity: 1;
    transform: translateY(-5px);
}

.error-message::before {
    content: '[ERROR] ';
    font-weight: 700;
}

/* ===== 特效樣式 ===== */

/* 數位粒子爆發 */
.pixel-burst {
    position: fixed;
    pointer-events: none;
    z-index: 200;
}

.burst-pixel {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--cyber-pink);
    box-shadow: 0 0 5px currentColor;
}

/* 震動效果增強 */
.glitch-shake {
    animation: glitchShake 0.5s ease-in-out;
}

@keyframes glitchShake {
    0%, 100% { transform: translate(0); }
    10% { transform: translate(-2px, -1px); }
    20% { transform: translate(2px, 1px); }
    30% { transform: translate(-1px, 2px); }
    40% { transform: translate(1px, -2px); }
    50% { transform: translate(-2px, 1px); }
    60% { transform: translate(2px, -1px); }
    70% { transform: translate(-1px, -2px); }
    80% { transform: translate(1px, 2px); }
    90% { transform: translate(-2px, -1px); }
}

/* ===== 響應式設計 ===== */

@media (max-width: 375px) {
    .cyber-envelope {
        width: 280px;
        height: 180px;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .card-terminal {
        max-width: 95%;
    }
    
    .code-line {
        font-size: 0.75rem;
        white-space: pre-wrap;
        overflow: visible;
    }
    
    .code-line-number {
        width: 20px;
        margin-right: 8px;
    }
}

@media (max-width: 320px) {
    .cyber-envelope {
        width: 250px;
        height: 160px;
    }
    
    .terminal-window {
        padding: 15px;
    }
}

.terminal-status-bar {
    padding: 12px;
}