/* ============================================
   FORMS.CSS - Form-Specific Styles
   ============================================ */

/* Ensure all form elements use border-box sizing */
.form-container *,
.form-card *,
.form-input,
.form-select,
.form-textarea,
.form-group,
.form-input-group {
    box-sizing: border-box;
}

/* ============================================
   FORM CONTAINERS
   ============================================ */

.form-container {
    max-width: 380px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
}

.form-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    padding: 2rem;
    box-sizing: border-box;
    width: 100%;
}

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

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

.form-subtitle {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin: 0;
    font-weight: 400;
}

.form-body {
    margin-bottom: 1.5rem;
}

.form-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-secondary);
    text-align: center;
}

.form-footer p {
    margin: 0;
    font-size: 0.875rem;
}

/* ============================================
   FORM GROUPS & FIELDS
   ============================================ */

.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.form-label-required::after {
    content: '*';
    color: var(--color-danger);
    margin-left: 0.25rem;
}

/* ============================================
   INPUT FIELDS
   ============================================ */

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-family: inherit;
    box-sizing: border-box;
    max-width: 100%;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: var(--bg-elevated);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

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

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--bg-secondary);
}

/* Input with icons */
.form-input-group {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.form-input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

.form-input-group .form-input {
    padding-left: 0.875rem;
    padding-right: 2.75rem;
}

/* Password toggle */
.form-password-toggle {
    position: absolute;
    right: 0.625rem;
    top: 0.5rem;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.25rem;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

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

.form-password-toggle:active {
    transform: none;
}

/* ============================================
   TEXTAREA
   ============================================ */

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* ============================================
   SELECT
   ============================================ */

.form-select {
    cursor: pointer;
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23b0b3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
    appearance: none;
}

/* ============================================
   CHECKBOX & RADIO
   ============================================ */

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
    flex-shrink: 0;
}

.form-check-label {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    cursor: pointer;
    user-select: none;
}

/* ============================================
   VALIDATION STATES
   ============================================ */

.form-input.is-valid,
.form-select.is-valid,
.form-textarea.is-valid {
    border-color: var(--color-success);
}

.form-input.is-valid:focus,
.form-select.is-valid:focus,
.form-textarea.is-valid:focus {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.1);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
    border-color: var(--color-danger) !important;
}

.form-input.is-invalid:focus,
.form-select.is-invalid:focus,
.form-textarea.is-invalid:focus {
    border-color: var(--color-danger) !important;
    box-shadow: 0 0 0 3px rgba(255, 71, 87, 0.15);
}

/* ============================================
   HELPER TEXT
   ============================================ */

.form-help {
    display: block;
    margin-top: 0.375rem;
    color: var(--text-disabled);
    font-size: 0.8125rem;
    line-height: 1.4;
}

.form-error {
    display: block;
    margin-top: 0.375rem;
    color: var(--color-danger);
    font-size: 0.875rem;
    line-height: 1.4;
    position: relative;
}

.form-input-group .form-error {
    margin-top: 0.375rem;
}

.form-success {
    display: block;
    margin-top: 0.375rem;
    color: var(--color-success);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* ============================================
   FORM BUTTONS
   ============================================ */

.form-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-submit {
    flex: 1;
}

/* ============================================
   LOADING STATE
   ============================================ */

.form-loading .form-input,
.form-loading .form-select,
.form-loading .form-textarea,
.form-loading .btn {
    pointer-events: none;
    opacity: 0.6;
}

.form-loading .btn {
    position: relative;
}

.form-loading .btn::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ============================================
   FLOATING LABELS
   ============================================ */

.form-floating {
    position: relative;
}

.form-floating .form-input {
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.form-floating .form-label {
    position: absolute;
    top: 0;
    left: 0;
    padding: 1rem 1rem 0;
    pointer-events: none;
    transform-origin: 0 0;
    transition: all var(--transition-fast);
    color: var(--text-tertiary);
}

.form-floating .form-input:focus ~ .form-label,
.form-floating .form-input:not(:placeholder-shown) ~ .form-label {
    transform: scale(0.85) translateY(0.25rem);
    color: var(--accent-primary);
}

/* ============================================
   FORM ROW
   ============================================ */

.form-row {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row-2 {
    grid-template-columns: repeat(2, 1fr);
}

.form-row-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* ============================================
   RADIO BUTTONS
   ============================================ */

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem 0;
    transition: all var(--transition-fast);
}

/* Hide default radio button */
.radio-label input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

/* Custom radio button */
.radio-label input[type="radio"] + span::before {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-right: 0.75rem;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    vertical-align: middle;
    transition: all var(--transition-fast);
}

/* Exit position - gray radio button */
.radio-label:nth-child(1) input[type="radio"]:checked + span::before {
    background-color: var(--text-tertiary);
    border-color: var(--text-tertiary);
    box-shadow: inset 0 0 0 3px var(--bg-tertiary);
}

/* Go short - red radio button */
.radio-label:nth-child(2) input[type="radio"]:checked + span::before {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    box-shadow: inset 0 0 0 3px var(--bg-tertiary);
}

.radio-label span {
    font-size: 0.9375rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .form-card {
        padding: 2rem;
    }
    
    .form-header {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 768px) {
    .form-container {
        padding: 0 0.75rem;
    }
    
    .form-card {
        padding: 1.75rem 1.5rem;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.625rem 0.75rem;
    }
    
    .form-input-group .form-input {
        padding-right: 2.5rem;
    }
    
    .form-row-2,
    .form-row-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .form-container {
        padding: 0 0.5rem;
    }
    
    .form-card {
        padding: 1.5rem 1rem;
        border-radius: var(--radius-md);
    }
    
    .form-header {
        margin-bottom: 1.25rem;
    }
    
    .form-title {
        font-size: 1.375rem;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.625rem 0.75rem;
    }
    
    .form-input-group .form-input {
        padding-left: 0.75rem;
        padding-right: 2.5rem;
    }
    
    .form-row-2,
    .form-row-3 {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
}

@media (max-width: 360px) {
    .form-container {
        padding: 0 0.25rem;
    }
    
    .form-card {
        padding: 1.25rem 0.75rem;
    }
    
    .form-title {
        font-size: 1.25rem;
    }
    
    .form-subtitle {
        font-size: 0.8125rem;
    }
}