.login-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.background-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../assets/images/主页_星辉剑插地.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
    animation: bgBreathe 20s infinite alternate ease-in-out;
}

.content-layer {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 60px 20px;
    width: 100%;
    max-width: 600px;
}

.header-section {
    text-align: center;
    animation: fadeInDown 1s ease-out;
    transition: transform 0.8s ease;
}

.game-title {
    font-family: var(--font-title);
    font-size: 3.5rem;
    color: var(--color-gold);
    text-shadow: var(--shadow-gold-glow);
    margin-bottom: 10px;
    letter-spacing: 4px;
}

.game-subtitle {
    font-family: var(--font-body);
    font-size: 1.2rem;
    color: var(--color-text-primary);
    font-weight: normal;
    letter-spacing: 2px;
    opacity: 0.9;
}

/* 初始视图 */
.initial-view {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    width: 100%;
    animation: fadeIn 1.2s ease-out 0.3s both;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.initial-view.hidden {
    opacity: 0;
    pointer-events: none;
    position: absolute; /* 隐藏时不占空间 */
}

/* 通用发光按钮 */
.glow-btn {
    width: 100%;
    max-width: 280px;
    background: var(--color-glow-cyan-dim);
    color: var(--color-bg-deep);
    border: none;
    border-radius: var(--radius-btn);
    padding: 16px 30px;
    font-size: 1.2rem;
    font-family: var(--font-title);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.glow-btn:not(:disabled):hover {
    background: var(--color-glow-cyan);
    box-shadow: var(--shadow-glow-cyan);
    transform: translateY(-2px);
}

.glow-btn:disabled {
    background: var(--color-locked);
    color: var(--color-text-dim);
    cursor: not-allowed;
    opacity: 0.7;
    box-shadow: none;
}

/* 创角卡片 */
.creation-card {
    background: rgba(26, 42, 58, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(126, 232, 250, 0.2);
    border-radius: var(--radius-card);
    padding: 40px;
    width: 100%;
    box-shadow: var(--shadow-card);
    transition: opacity 0.8s ease, transform 0.8s ease;
    opacity: 1;
    transform: translateY(0);
    margin: auto 0;
}

.creation-card.hidden {
    opacity: 0;
    transform: translateY(30px);
    pointer-events: none;
    position: absolute;
}

.creation-card #start-btn {
    max-width: 100%; /* 创角卡片内的按钮撑满 */
}

.section-title {
    font-family: var(--font-title);
    font-size: 1.2rem;
    color: var(--color-text-primary);
    margin-bottom: 15px;
    text-align: center;
}

.avatar-selection {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 35px;
}

.avatar-option {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: rgba(15, 27, 45, 0.8);
    border: 2px solid var(--color-text-dim);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end; /* 让文字靠底 */
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--color-text-dim);
    position: relative;
    overflow: hidden;
    /* 定义头像颜色的 CSS 变量 */
    --avatar-color: var(--color-text-dim);
}

.avatar-option:hover {
    border-color: var(--color-glow-cyan-dim);
    color: var(--color-text-primary);
    transform: translateY(-2px);
    --avatar-color: var(--color-text-primary);
}

.avatar-option.selected {
    border-color: var(--color-glow-cyan);
    box-shadow: var(--shadow-glow-cyan);
    color: var(--color-glow-cyan);
    --avatar-color: var(--color-glow-cyan);
}

/* 填满圆框的遮罩设置 */
.avatar-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover; /* 改回 cover，因为您提供的图片构图很好 */
    background-position: center; 
    background-repeat: no-repeat;
    /* 1. 用目标颜色与图片正片叠底，白色变成目标色，黑色保持黑色 */
    background-image: 
        linear-gradient(var(--avatar-color), var(--avatar-color)),
        var(--bg-url);
    background-blend-mode: multiply;
    /* 2. 滤色模式：黑色变透明，彩色保留，完美融入背景 */
    mix-blend-mode: screen;
    transition: all 0.3s ease;
    z-index: 1;
}

.mask-male {
    --bg-url: url('../assets/avatars/avatar_male.png');
}

.mask-female {
    --bg-url: url('../assets/avatars/avatar_female.png');
}

.avatar-option span {
    font-size: 0.85rem;
    position: relative;
    margin-bottom: 6px;
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: 0 1px 4px rgba(0,0,0,1); /* 加深阴影确保文字可见 */
    z-index: 2;
}

.input-wrapper {
    margin-bottom: 35px;
}

#hero-name {
    width: 100%;
    background: rgba(15, 27, 45, 0.6);
    border: 1px solid var(--color-glow-cyan-dim);
    border-radius: var(--radius-btn);
    padding: 15px 20px;
    color: var(--color-text-primary);
    font-size: 1.1rem;
    font-family: var(--font-body);
    text-align: center;
    transition: all 0.3s ease;
    outline: none;
}

#hero-name:focus {
    border-color: var(--color-glow-cyan);
    box-shadow: 0 0 10px rgba(126, 232, 250, 0.2);
    background: rgba(15, 27, 45, 0.8);
}

#hero-name::placeholder {
    color: var(--color-text-dim);
    font-size: 0.95rem;
}

.footer-section {
    text-align: center;
    animation: fadeInUp 1s ease-out 0.6s both;
    transition: opacity 0.5s ease;
}

.footer-section.hidden {
    opacity: 0;
    pointer-events: none;
}

.quote {
    font-family: var(--font-title);
    font-size: 1.1rem;
    color: var(--color-text-primary);
    line-height: 1.8;
    opacity: 0.85;
    text-shadow: 0 2px 6px rgba(0,0,0,0.9);
    font-style: italic;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bgBreathe {
    0% { transform: scale(1); }
    100% { transform: scale(1.05); }
}