:root {
    --primary-color: #ff69b4;
    --secondary-color: #ff8da1;
    --accent-color: #ffd1dc;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #fff;
    --card-bg: #fff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --transition-time: 0.3s;
}

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

body {
    font-family: 'Noto Serif SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: #f8f9fa;
    min-height: 100vh;
}

.bg-container {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

.bg-fixed {
    background-image: url('../img/kong.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

.overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(192, 192, 192, 0.35);
    z-index: -1;
}

.hearts-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.heart {
    position: absolute;
    top: -50px;
    animation: fallHeart linear forwards;
    color: #ff69b4;
}

@keyframes fallHeart {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 15px 35px var(--shadow-color);
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    animation: fadeInUp 0.6s ease-out;
}

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

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-family: 'Dancing Script', cursive;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.login-header .subtitle {
    color: var(--light-text);
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    padding: 0.8rem 1rem;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-time) ease;
    background-color: #fafafa;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.1);
}

.form-group input[type="text"]::placeholder,
.form-group input[type="password"]::placeholder {
    color: #aaa;
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 2.5rem;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--light-text);
    transition: color var(--transition-time) ease;
}

.toggle-password:hover {
    color: var(--primary-color);
}

.remember-me {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.remember-me label {
    font-weight: 400;
    cursor: pointer;
    color: var(--light-text);
}

.login-btn {
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-time) ease;
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.3);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 105, 180, 0.4);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.forgot-password {
    text-align: center;
    margin-top: -0.5rem;
}

.forgot-password a {
    color: var(--light-text);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-time) ease;
}

.forgot-password a:hover {
    color: var(--primary-color);
}

.password-hint {
    background: linear-gradient(135deg, #fff5f5, #fff);
    border: 1px solid var(--accent-color);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
    animation: fadeInUp 0.3s ease-out;
}

.password-hint i {
    color: #ffc107;
    margin-right: 0.5rem;
}

.password-hint p {
    color: var(--text-color);
    font-size: 0.9rem;
}

.password-hint span {
    color: var(--primary-color);
    font-weight: 600;
}

.login-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.last-login {
    color: var(--light-text);
    font-size: 0.85rem;
}

.error-message {
    background-color: #ffe6e6;
    color: #d63031;
    padding: 0.8rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

.lockout-message {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fff5f5, #fff);
    border: 2px solid var(--accent-color);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    gap: 1rem;
}

.lockout-message i {
    font-size: 3rem;
    color: var(--primary-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.lockout-message p {
    color: var(--text-color);
    font-size: 1rem;
}

.lockout-message span {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease-out;
}

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

.success-content {
    text-align: center;
    animation: successPop 0.5s ease-out;
}

.success-content i {
    font-size: 5rem;
    color: var(--primary-color);
    animation: heartbeat 1s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.2); }
    50% { transform: scale(1); }
    75% { transform: scale(1.1); }
}

.success-content p {
    font-family: 'Dancing Script', cursive;
    font-size: 2rem;
    color: var(--primary-color);
    margin-top: 1rem;
}

@keyframes successPop {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 2rem;
    }

    .login-header h1 {
        font-size: 2rem;
    }

    .heart {
        font-size: 20px !important;
    }
}