/**
 * Page Proposer un Article - Design UX/UI Moderne
 * Multi-step Form avec validation et animations
 */

/* ================================
   VARIABLES
   ================================ */
:root {
    --cgt-red: #d00000;
    --cgt-red-dark: #b00000;
    --cgt-red-light: #ff0000;
    --color-white: #ffffff;
    --color-black: #111111;
    --color-gray: #e5e7eb;
    --color-gray-dark: #6b7280;
    --color-gray-light: #f3f4f6;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --transition: 0.3s ease;
}

/* ================================
   CONTAINER PRINCIPAL
   ================================ */
.submit-article-page {
    min-height: calc(100vh - 200px);
    padding: 2rem 0 3rem;
    background: linear-gradient(135deg, #f5f5f5 0%, #e5e7eb 100%);
}

.submit-article-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ================================
   HEADER
   ================================ */
.submit-article-header {
    text-align: center;
    margin-bottom: 2rem;
}

.submit-article-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin: 0 0 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.submit-article-header h1 .icon {
    font-size: 2.5rem;
}

.submit-article-header p {
    font-size: 1.125rem;
    color: var(--color-gray-dark);
    max-width: 600px;
    margin: 0 auto;
}

/* ================================
   BARRE DE PROGRESSION
   ================================ */
.progress-bar-container {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-bottom: 1.5rem;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-gray);
    z-index: 0;
}

.progress-line {
    position: absolute;
    top: 20px;
    left: 0;
    height: 3px;
    background: var(--cgt-red);
    transition: width 0.5s ease;
    z-index: 1;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 2;
    flex: 1;
}

.progress-step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-gray-dark);
    transition: all var(--transition);
}

.progress-step.active .progress-step-circle {
    background: var(--cgt-red);
    border-color: var(--cgt-red);
    color: var(--color-white);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(208, 0, 0, 0.3);
}

.progress-step.completed .progress-step-circle {
    background: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-white);
}

.progress-step-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-dark);
    text-align: center;
    white-space: nowrap;
}

.progress-step.active .progress-step-label {
    color: var(--cgt-red);
}

.progress-step.completed .progress-step-label {
    color: var(--color-success);
}

/* ================================
   FORMULAIRE PAR ÉTAPES
   ================================ */
.cgt-submit-article {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

.form-step {
    display: none;
    animation: fadeIn 0.4s ease;
}

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

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

.step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--cgt-red);
}

.step-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(208, 0, 0, 0.1);
    color: var(--cgt-red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.step-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-black);
    margin: 0;
}

.step-description {
    color: var(--color-gray-dark);
    font-size: 1rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* ================================
   CHAMPS DE FORMULAIRE
   ================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.form-group label .required {
    color: var(--cgt-red);
    margin-left: 0.25rem;
}

.form-group label .hint {
    font-weight: 400;
    color: var(--color-gray-dark);
    font-size: 0.875rem;
    display: block;
    margin-top: 0.25rem;
}

.form-control {
    width: 90%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition);
    background: var(--color-white);
}

.form-control:focus {
    outline: none;
    border-color: var(--cgt-red);
    box-shadow: 0 0 0 3px rgba(208, 0, 0, 0.1);
}

.form-control::placeholder {
    color: var(--color-gray-dark);
}

.form-control.error {
    border-color: var(--color-error);
}

.form-control.success {
    border-color: var(--color-success);
}

textarea.form-control {
    min-height: 200px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23111111' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Messages d'erreur inline */
.form-error-message {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: none;
}

.form-group.has-error .form-error-message {
    display: block;
}

.form-success-message {
    color: var(--color-success);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: none;
}

.form-group.has-success .form-success-message {
    display: block;
}

/* ================================
   UPLOAD DE FICHIERS
   ================================ */
.file-upload-container {
    border: 2px dashed var(--color-gray);
    border-radius: var(--radius-sm);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
    background: var(--color-gray-light);
}

.file-upload-container:hover {
    border-color: var(--cgt-red);
    background: rgba(208, 0, 0, 0.02);
}

.file-upload-container.drag-over {
    border-color: var(--cgt-red);
    background: rgba(208, 0, 0, 0.05);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--color-gray-dark);
    margin-bottom: 1rem;
}

.file-upload-text {
    font-size: 1rem;
    color: var(--color-black);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.file-upload-hint {
    font-size: 0.875rem;
    color: var(--color-gray-dark);
}

.file-upload-container input[type="file"] {
    display: none;
}

.file-preview {
    display: none;
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-white);
    border: 2px solid var(--color-success);
    border-radius: var(--radius-sm);
    align-items: center;
    gap: 1rem;
}

.file-preview.show {
    display: flex;
}

.file-preview-icon {
    font-size: 2rem;
    color: var(--color-success);
}

.file-preview-info {
    flex: 1;
}

.file-preview-name {
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 0.25rem;
}

.file-preview-size {
    font-size: 0.875rem;
    color: var(--color-gray-dark);
}

.file-preview-remove {
    background: var(--color-error);
    color: var(--color-white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition);
}

.file-preview-remove:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* Image preview */
.image-preview {
    display: none;
    margin-top: 1rem;
}

.image-preview.show {
    display: block;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

/* ================================
   CARACTÈRES RESTANTS
   ================================ */
.char-counter {
    text-align: right;
    font-size: 0.875rem;
    color: var(--color-gray-dark);
    margin-top: 0.5rem;
}

.char-counter.warning {
    color: var(--color-warning);
}

.char-counter.error {
    color: var(--color-error);
}

/* ================================
   CHECKBOX CGV
   ================================ */
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1.25rem;
    background: var(--color-gray-light);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-gray);
    transition: all var(--transition);
}

.form-checkbox:hover {
    border-color: var(--cgt-red);
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--cgt-red);
    flex-shrink: 0;
}

.form-checkbox label {
    margin: 0;
    cursor: pointer;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.form-checkbox .required {
    color: var(--cgt-red);
}

/* ================================
   BOUTONS DE NAVIGATION
   ================================ */
.form-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-gray);
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    font-family: inherit;
}

.btn svg {
    flex-shrink: 0;
}

.btn-primary {
    background: var(--cgt-red);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background: var(--cgt-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(208, 0, 0, 0.3);
}

.btn-secondary {
    background: var(--color-gray);
    color: var(--color-black);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-dark);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-back {
    background: transparent;
    color: var(--color-gray-dark);
    padding: 0.5rem 1rem;
}

.btn-back:hover {
    color: var(--color-black);
    transform: none;
}

/* ================================
   MESSAGES DE NOTIFICATION
   ================================ */
.notice {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 2rem;
    font-size: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.notice.success {
    background: #dcfce7;
    border: 2px solid var(--color-success);
    color: #166534;
}

.notice.error {
    background: #fee2e2;
    border: 2px solid var(--color-error);
    color: #991b1b;
}

.notice.warning {
    background: #fef3c7;
    border: 2px solid var(--color-warning);
    color: #78350f;
}

.notice.info {
    background: #e0f2fe;
    border: 2px solid #0ea5e9;
    color: #0c4a6e;
}

.notice ul {
    margin: 0;
    padding-left: 1.25rem;
}

.notice li {
    margin-bottom: 0.5rem;
}

/* ================================
   GRILLE RESPONSIVE
   ================================ */
.form-row {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }

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

.form-group.full-width {
    grid-column: 1 / -1;
}

/* ================================
   ANIMATIONS
   ================================ */
.bounce {
    animation: bounce 0.5s ease;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

/* ================================
   RESPONSIVE MOBILE
   ================================ */
@media (max-width: 768px) {
    .submit-article-page {
        padding: 1.5rem 0 2rem;
    }

    .submit-article-header h1 {
        font-size: 2rem;
        flex-direction: column;
    }

    .progress-bar-container {
        padding: 1.5rem;
    }

    .progress-step-label {
        font-size: 0.75rem;
    }

    .progress-step-circle {
        width: 35px;
        height: 35px;
        font-size: 0.875rem;
    }

    .cgt-submit-article {
        padding: 1.75rem;
    }

    .step-header {
        flex-direction: column;
        text-align: center;
    }

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

    .form-navigation {
        flex-direction: column-reverse;
        gap: 0.75rem;
    }

    .form-navigation .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .submit-article-header h1 {
        font-size: 1.75rem;
    }

    .progress-step-label {
        display: none;
    }

    .progress-steps {
        padding: 0 1rem;
    }
}

/* ================================
   HELPER CLASSES
   ================================ */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}