body {
    background: linear-gradient(135deg, #e0f7fa 0%, #ffffff 100%);
    font-family: 'Segoe UI', 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}
.login-container {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    max-width: 400px;
    margin: 60px auto;
    padding: 40px 32px 32px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.login-title {
    color: #2196f3;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 2px;
}
.login-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.input-label {
    color: #2196f3;
    font-size: 1rem;
    font-weight: 500;
}
.input-field {
    padding: 10px 12px;
    border: 1px solid #b2dfdb;
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
    transition: border 0.2s;
    width: 100%;
    box-sizing: border-box;
}
.input-field.pw {
    padding-right: 38px;
    width: 100%;
    box-sizing: border-box;
}
.password-visual-group {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}
.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    outline: none;
    font-size: 1.2rem;
    color: #2196f3;
    padding: 0 2px;
}
.input-field:focus {
    border-color: #4caf50;
}
.login-btn {
    background: linear-gradient(90deg, #2196f3 60%, #4caf50 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 12px 0;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 10px;
}
.login-btn:hover {
    background: linear-gradient(90deg, #1976d2 60%, #388e3c 100%);
}
.language-switch {
    margin-top: 18px;
    text-align: center;
    color: #4caf50;
    font-size: 0.98rem;
    cursor: pointer;
    user-select: none;
}
.error-message {
    color: #e53935;
    font-size: 0.95rem;
    margin-bottom: -10px;
    min-height: 18px;
    text-align: left;
}
.remember-me {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.98rem;
    color: #2196f3;
}

.back-btn-container {
    text-align: left;
    margin: 20px 0;
}

.back-btn {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.back-btn:hover {
    background: linear-gradient(135deg, #7f8c8d, #6c7b7d);
}

.gift-form-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.gift-form-group {
    margin-bottom: 25px;
}

.gift-form-group label {
    display: block;
    margin-bottom: 8px;
    color: #2c3e50;
    font-weight: 500;
    font-size: 14px;
}

.gift-form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

.gift-form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.gift-btn-group {
    text-align: center;
    margin-top: 30px;
}

.gift-btn {
    padding: 12px 30px;
    margin: 0 10px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.gift-btn.confirm {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.gift-btn.confirm:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
}

.gift-btn.cancel {
    background: #ecf0f1;
    color: #2c3e50;
}

.gift-btn.cancel:hover {
    background: #d5dbdb;
    transform: translateY(-2px);
}

.gift-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn.disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

.btn.disabled:hover,
.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}