@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

body.login-page {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #064e3b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    color: #f8fafc;
}

/* 背景動態微光氣泡裝飾 */
body.login-page::before,
body.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(90px);
    z-index: 0;
    opacity: 0.25;
}

body.login-page::before {
    background: #10b981;
    top: -100px;
    left: -100px;
}

body.login-page::after {
    background: #0284c7;
    bottom: -100px;
    right: -100px;
}

.login-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: rgba(30, 41, 59, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 1px rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 2px rgba(16, 185, 129, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-brand-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.35);
    margin-bottom: 16px;
}

.login-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #ffffff;
    margin-bottom: 6px;
}

.login-subtitle {
    font-size: 13px;
    color: #94a3b8;
    font-weight: 400;
}

.login-form .form-group {
    margin-bottom: 22px;
    position: relative;
}

.login-form label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: #cbd5e1;
    margin-bottom: 8px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    color: #64748b;
    font-size: 15px;
    transition: color 0.2s ease;
}

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 12px 14px 12px 42px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: #ffffff;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease-in-out;
}

.login-form input[type="text"]::placeholder,
.login-form input[type="password"]::placeholder {
    color: #64748b;
}

.login-form input[type="text"]:focus,
.login-form input[type="password"]:focus {
    background: rgba(15, 23, 42, 0.85);
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
}

.login-form input[type="text"]:focus + .input-icon,
.login-form input[type="password"]:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
    color: #10b981;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: none;
    border-radius: 10px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    transition: all 0.2s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}

.btn-login:hover {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: translateY(1px);
}

.alert-custom {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 13px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-danger-custom {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success-custom {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 12px;
    color: #64748b;
}

.login-footer a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.login-footer a:hover {
    color: #10b981;
}