/* css/register.css - style for register.html */
:root {
    --dark-bg: #0a0a0f;
    --dark-card: #111118;
    --dark-border: #22222a;
    --light-text: #f0f0ff;
    --muted-text: #a0a0c0;
    --yellow-primary: #ffd700;
    --yellow-muted: rgba(255, 215, 0, 0.5);
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--light-text);
    min-height: 100vh;
    line-height: 1.6;
    font-weight: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.register-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}



.register-box {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.register-header {
    text-align: center;
    margin-bottom: 32px;
    position: relative;
}


.back-link {
    position: absolute;
    top: -35px;
    left: 0;
    color: var(--muted-text);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}


.back-link:hover {
    color: var(--yellow-primary);
}

.register-logo {
    margin-bottom: 20px;
}

.register-logo img {
    width: 70px;
    height: auto;
    object-fit: contain;
}

.register-header h2 {
    font-weight: 300;
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--light-text);
}

.register-header p {
    color: var(--muted-text);
    font-size: 15px;
}


.register-form {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 576px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--light-text);
    font-size: 14px;
    font-weight: 400;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--dark-border);
    border-radius: 10px;
    color: var(--light-text);
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--yellow-muted);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form-input::placeholder {
    color: var(--muted-text);
    opacity: 0.7;
}

.input-with-icon {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--muted-text);
    cursor: pointer;
    padding: 8px;
    font-size: 18px;
    transition: color 0.3s ease;
}

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

.input-feedback {
    font-size: 12px;
    margin-top: 6px;
    padding-left: 4px;
    opacity: 0.8;
}

.input-feedback.success {
    color: var(--success-color);
}

.input-feedback.error {
    color: var(--error-color);
}

.password-strength {
    margin-top: 12px;
}

.strength-bar {
    height: 4px;
    background: var(--error-color);
    border-radius: 2px;
    width: 0%;
    transition: all 0.3s ease;
    margin-bottom: 6px;
}

.strength-text {
    font-size: 12px;
    color: var(--muted-text);
    display: flex;
    justify-content: space-between;
}

.strength-text span {
    font-weight: 500;
}

.checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--muted-text);
    margin-bottom: 16px;
    user-select: none;
}

.checkbox:last-child {
    margin-bottom: 24px;
}

.checkbox input {
    display: none;
}

.checkmark {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border: 2px solid var(--dark-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    margin-top: 1px;
}

.checkbox input:checked + .checkmark {
    background: var(--yellow-primary);
    border-color: var(--yellow-primary);
}

.checkbox input:checked + .checkmark::after {
    content: '✓';
    color: var(--dark-bg);
    font-size: 12px;
    font-weight: bold;
}

.inline-link {
    color: var(--yellow-primary);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.inline-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    border-radius: 10px;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    font-weight: 400;
    cursor: pointer;
}

.btn-primary {
    background: var(--yellow-primary);
    color: var(--dark-bg);
    font-weight: 500;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--light-text);
    border: 1px solid var(--dark-border);
}

.btn-secondary:hover {
    border-color: var(--yellow-muted);
    color: var(--yellow-primary);
}

.btn-block {
    width: 100%;
    display: flex;
}


.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    border-top-color: var(--yellow-primary);
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* divider */
.register-divider {
    display: flex;
    align-items: center;
    margin: 24px 0;
    color: var(--muted-text);
}

.register-divider::before,
.register-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--dark-border);
}

.register-divider span {
    padding: 0 16px;
    font-size: 14px;
}

.message {
    padding: 16px;
    border-radius: 10px;
    margin-top: 20px;
    font-size: 14px;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success-color);
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error-color);
}

/* responsive */
@media (max-width: 768px) {
    .register-box {
        padding: 32px 24px;
        border: none;
        box-shadow: none;
    }
    
    .back-link {
        top: -45px;
        font-size: 13px;
    }
    
    .register-logo img {
        width: 60px;
    }
    
    .register-header h2 {
        font-size: 24px;
    }
    
    .register-header p {
        font-size: 14px;
    }
    
    .form-input {
        padding: 12px 14px;
        font-size: 15px;
    }
    
    .btn {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .register-divider span {
        padding: 0 12px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 16px;
        align-items: flex-start;
        padding-top: 40px;
    }
    
    .register-container {
        max-width: 100%;
    }
    
    .register-box {
        padding: 28px 20px;
    }
    
    .back-link {
        top: -40px;
        left: 0;
        right: 0;
        text-align: center;
    }
    
    .checkbox {
        font-size: 13px;
    }
    
    .inline-link {
        font-size: 13px;
    }
}

.form-input:focus {
    animation: pulse 0.3s ease;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(255, 215, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 215, 0, 0); }
}

.register-box,
.form-input,
.btn,
.checkmark,
.password-toggle,
.strength-bar {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus-visible {
    outline: 2px solid var(--yellow-primary);
    outline-offset: 2px;
}

.btn:focus-visible {
    outline: 2px solid var(--yellow-primary);
    outline-offset: 2px;
}

.checkbox:focus-within .checkmark {
    outline: 2px solid var(--yellow-primary);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}


.form-input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: var(--error-color);
    background: rgba(239, 68, 68, 0.05);
}

.form-input:valid:not(:placeholder-shown):not(:focus) {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.form-input.error-shake {
    animation: shake 0.5s ease;
    border-color: var(--error-color);
}

.form-label::after {
    content: ' *';
    color: var(--error-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.form-label:hover::after {
    opacity: 1;
}