/* ===================================================================
   FORMULAR STYLES - Perfekt integriert in das vorhandene Design-System
   Verwendbar für: Login, Registrierung, Kontakt, Newsletter
   =================================================================== */

/* Basis-Container für Formulare */
.form-container {
    max-width: 500px;
    margin: 3rem auto;
    padding: 2.5rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

/* Größere Formulare (z.B. Registrierung) */
.form-container.form-large {
    max-width: 600px;
}

/* Kleinere Formulare (z.B. Newsletter) */
.form-container.form-small {
    max-width: 400px;
    padding: 2rem;
}

/* Formular-Header */
.form-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.form-header h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-header p {
    color: var(--text-light);
    font-size: 1rem;
    margin: 0;
}

/* Icon im Header (optional) */
.form-header-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

/* Formular-Gruppen */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-of-type {
    margin-bottom: 2rem;
}

/* Labels */
.form-label {
    display: block;
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-label.required::after {
    content: " *";
    color: #e74c3c;
}

.form-label-small {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: normal;
    margin-top: 0.25rem;
}

/* Input-Felder */
.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--background);
    color: var(--text-color);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-input:hover:not(:focus):not(:disabled),
.form-textarea:hover:not(:focus):not(:disabled),
.form-select:hover:not(:focus):not(:disabled) {
    border-color: var(--text-light);
}

/* Placeholder Styles */
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-light);
    opacity: 0.6;
}

/* Textarea */
.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* Select */
.form-select {
    cursor: pointer;
    appearance: none;
    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='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* Input mit Icons */
.form-input-group {
    position: relative;
}

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

.form-input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1.1rem;
    pointer-events: none;
}

/* Password Toggle Button */
.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.25rem;
    transition: var(--transition);
}

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

/* Checkboxen und Radio Buttons */
.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
    width: 18px;
    height: 18px;
    margin-right: 0.75rem;
    cursor: pointer;
    accent-color: var(--accent-color);
}

.form-checkbox label,
.form-radio label {
    color: var(--text-color);
    font-size: 0.95rem;
    cursor: pointer;
    user-select: none;
}

.form-checkbox a,
.form-radio a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.form-checkbox a:hover,
.form-radio a:hover {
    text-decoration: underline;
}

/* Buttons */
.form-button {
    width: 100%;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    background: var(--accent-color);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.form-button:hover:not(:disabled) {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.form-button:active:not(:disabled) {
    transform: translateY(0);
}

.form-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Sekundäre Buttons */
.form-button-secondary {
    background: var(--secondary-color);
    color: var(--text-color);
}

.form-button-secondary:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
}

/* Outline Buttons */
.form-button-outline {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.form-button-outline:hover:not(:disabled) {
    background: var(--accent-color);
    color: white;
}

/* Button Gruppe */
.form-button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-button-group .form-button {
    width: auto;
    flex: 1;
}

/* Link-Button */
.form-link-button {
    background: none;
    border: none;
    color: var(--accent-color);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 0.5rem;
    text-decoration: underline;
    transition: var(--transition);
}

.form-link-button:hover {
    color: var(--primary-color);
}

/* Formular-Fußzeile */
.form-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.form-footer p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0 0 0.5rem 0;
}

.form-footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.form-footer a:hover {
    text-decoration: underline;
    color: var(--primary-color);
}

/* Validierungs-Feedback */
.form-error {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: none;
}

.form-error.active {
    display: block;
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: #e74c3c;
    background: rgba(231, 76, 60, 0.05);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-success {
    color: #27ae60;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: none;
}

.form-success.active {
    display: block;
}

.form-input.success,
.form-textarea.success,
.form-select.success {
    border-color: #27ae60;
    background: rgba(39, 174, 96, 0.05);
}

/* Success/Error Messages */
.form-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    display: none;
}

.form-message.active {
    display: block;
}

.form-message.error {
    background: rgba(231, 76, 60, 0.1);
    border: 2px solid #e74c3c;
    color: #c0392b;
}

.form-message.success {
    background: rgba(39, 174, 96, 0.1);
    border: 2px solid #27ae60;
    color: #229954;
}

.form-message.info {
    background: rgba(52, 152, 219, 0.1);
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

/* Loading Spinner für Buttons */
.form-button.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.form-button.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spinner 0.8s linear infinite;
}

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

/* Zwei-Spalten Layout für größere Formulare */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Social Login Buttons */
.social-login {
    margin: 2rem 0;
}

.social-login-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 2rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.social-login-divider::before,
.social-login-divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.social-login-divider span {
    padding: 0 1rem;
}

.social-button {
    width: 100%;
    padding: 0.875rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--white);
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-family: inherit;
}

.social-button:hover {
    border-color: var(--accent-color);
    background: var(--background);
    transform: translateY(-2px);
}

.social-button img,
.social-button svg {
    width: 20px;
    height: 20px;
}

/* File Upload */
.form-file-upload {
    position: relative;
}

.form-file-upload input[type="file"] {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.form-file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--background);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    color: var(--text-light);
}

.form-file-label:hover {
    border-color: var(--accent-color);
    background: var(--white);
    color: var(--accent-color);
}

.form-file-label.has-file {
    border-style: solid;
    border-color: var(--accent-color);
    background: rgba(52, 152, 219, 0.05);
}

/* Character Counter */
.form-character-counter {
    text-align: right;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.form-character-counter.warning {
    color: #f39c12;
}

.form-character-counter.danger {
    color: #e74c3c;
}

/* Progress Bar für mehrstufige Formulare */
.form-progress {
    margin-bottom: 2rem;
}

.form-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.form-progress-fill {
    height: 100%;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.form-progress-steps {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
}

.form-progress-step {
    flex: 1;
    text-align: center;
    padding: 0.5rem;
}

.form-progress-step.active {
    color: var(--accent-color);
    font-weight: 600;
}

.form-progress-step.completed {
    color: #27ae60;
}

/* Responsive Anpassungen */
@media (max-width: 768px) {
    .form-container {
        margin: 2rem 1rem;
        padding: 2rem 1.5rem;
        border-radius: 8px;
    }

    .form-header h2 {
        font-size: 1.75rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-button-group {
        flex-direction: column;
    }

    .form-button-group .form-button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .form-container {
        margin: 1rem 0.5rem;
        padding: 1.5rem 1rem;
    }

    .form-header {
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }

    .form-header h2 {
        font-size: 1.5rem;
    }

    .form-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* Dark Theme Anpassungen */
[data-theme="dark"] .form-file-label {
    border-color: #2d2d2d;
    background: #121212;
}

[data-theme="dark"] .form-file-label:hover {
    border-color: var(--accent-color);
    background: #1e1e1e;
}

[data-theme="dark"] .social-button {
    background: #1e1e1e;
    border-color: #2d2d2d;
}

[data-theme="dark"] .social-button:hover {
    background: #2d2d2d;
}

/* Print Styles */
@media print {
    .form-button,
    .social-login,
    .form-footer {
        display: none;
    }

    .form-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Zusätzliche Utility-Klassen */
.form-text-center {
    text-align: center;
}

.form-text-right {
    text-align: right;
}

.form-text-muted {
    color: var(--text-light);
    font-size: 0.9rem;
}

.form-mt-small {
    margin-top: 0.75rem;
}

.form-mt-medium {
    margin-top: 1.5rem;
}

.form-mt-large {
    margin-top: 2rem;
}

.form-mb-small {
    margin-bottom: 0.75rem;
}

.form-mb-medium {
    margin-bottom: 1.5rem;
}

.form-mb-large {
    margin-bottom: 2rem;
}