:root {
    --primary: #1E40AF;
    --primary-dark: #0284c7;
    --secondary: #10b981;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --gray-900: #0f172a;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --white: #ffffff;
    --radius: 12px;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Roboto', system-ui, sans-serif;
    background: linear-gradient(135deg, #dbdbdb 0%, #e0f2fe 100%);

}

/* ========================================
   CONTAINER
   ======================================== */

.registration-container {
    max-width: 900px;
    margin: 0 auto;
        padding: 0 20px;
}

/* ========================================
   PROGRESS BAR
   ======================================== */

.progress-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 30px;
    right: 30px;
    height: 3px;
    background: var(--gray-200);
    transform: translateY(-50%);
    z-index: 0;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    flex: 1;
    position: relative;
    z-index: 1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.step-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--white);
    border: 3px solid var(--gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--gray-500);
    transition: all 0.3s ease;
}

.progress-step.active .step-circle,
.progress-step.completed .step-circle {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: var(--white);
}

.step-label {
    font-size: 13px;
    color: var(--gray-600);
    font-weight: 500;
    text-align: center;
    max-width: 120px;
}

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

/* ========================================
   FORM HEADER
   ======================================== */

.form-header {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease;
}

.form-title {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.form-title .icon {
    font-size: 42px;
}

.form-subtitle {
    color: var(--gray-600);
    font-size: 16px;
}

/* ========================================
   FORM STEPS
   ======================================== */

.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

.step-content {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.step-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--gray-100);
}

.step-icon {
    font-size: 28px;
}

/* ========================================
   FORM GROUPS
   ======================================== */

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.form-group label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

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

.form-group select {
    cursor: pointer;
    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='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* Character Counter */
.char-counter {
    text-align: right;
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 8px;
}

/* ========================================
   CHECKBOXES
   ======================================== */

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--dark);
    font-weight: 500;
}

.checkbox-icon {
    font-size: 20px;
}

.checkbox-group-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.checkbox-inline {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--dark);
}

.checkbox-inline input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* ========================================
   DRONE ITEMS
   ======================================== */

#dronesContainer {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 25px;
}

.drone-item {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 25px;
    position: relative;
    animation: slideInUp 0.4s ease;
}

.drone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--gray-200);
}

.drone-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.drone-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}

.btn-remove-drone {
    background: var(--white);
    border: 2px solid var(--danger);
    color: var(--danger);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: all 0.3s ease;
}

.btn-remove-drone:hover {
    background: var(--danger);
    color: var(--white);
}

.btn-add-drone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--white);
    border: 2px dashed var(--primary);
    border-radius: var(--radius);
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
}

.btn-add-drone:hover {
    background: var(--primary);
    color: var(--white);
    border-style: solid;
}

.btn-icon {
    font-size: 20px;
}

/* ========================================
   DOCUMENTS UPLOAD
   ======================================== */

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.document-upload {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

.document-upload:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.1);
}

.document-header {
    display: flex;
    align-items: start;
    gap: 12px;
    margin-bottom: 15px;
}

.document-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.document-icon.required {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.document-icon.optional {
    background: var(--gray-300);
}

.document-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.document-info p {
    font-size: 13px;
    color: var(--gray-600);
}

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

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 30px 20px;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--white);
}

.file-label:hover {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.02);
}

.file-icon {
    font-size: 32px;
    color: var(--gray-400);
}

.file-text {
    color: var(--gray-600);
    font-size: 14px;
    font-weight: 500;
}

.file-preview {
    margin-top: 12px;
    padding: 12px;
    background: var(--white);
    border-radius: 8px;
    font-size: 13px;
    color: var(--secondary);
    font-weight: 500;
    display: none;
}

.file-preview.active {
    display: flex;
    align-items: center;
    gap: 8px;
}

.file-preview::before {
    content: '✓';
    font-size: 16px;
}

/* ========================================
   TERMS
   ======================================== */

.terms-section {
    background: var(--gray-100);
    padding: 20px;
    border-radius: var(--radius);
    margin-top: 30px;
}

.checkbox-terms {
    display: flex;
    align-items: start;
    gap: 12px;
    cursor: pointer;
}

.checkbox-terms input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
    accent-color: var(--primary);
}

.checkbox-terms span {
    font-size: 14px;
    color: var(--dark);
    line-height: 1.6;
}

.checkbox-terms a {
    color: var(--primary);
    text-decoration: underline;
}

/* ========================================
   NAVIGATION
   ======================================== */

.form-navigation {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-top: 30px;
}

.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-prev {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

.btn-prev:hover {
    background: var(--gray-100);
    border-color: var(--gray-300);
}

.btn-next,
.btn-submit {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    margin-left: auto;
}

.btn-next:hover,
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.3);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@media (max-width: 768px) {
    

    .progress-bar {
        flex-direction: column;
        gap: 20px;
        padding: 10px;
    }

    .progress-bar::before {
        display: none;
    }

    .progress-step {
        flex-direction: row;
        width: 100%;
    }

    .step-label {
        text-align: left;
        max-width: 100%;
    }

    .step-content {
        padding: 25px 20px;
    }

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

    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .documents-grid {
        grid-template-columns: 1fr;
    }

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

    .btn-nav {
        width: 100%;
        justify-content: center;
    }

    .btn-next,
    .btn-submit {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .form-title {
        font-size: 24px;
    }

    .form-title .icon {
        font-size: 32px;
    }

    .step-title {
        font-size: 20px;
    }
}



 .password-container {
            position: relative;
            display: flex;
            align-items: center;
            width: 100%;
        }

        /* Champ mot de passe */
        .password-container input {
            width: 100%;
            padding: 10px;
            padding-right: 40px;
            /* Pour laisser de l'espace au bouton 👁 */
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 16px;
        }

        /* Bouton œil (👁) */
        .toggle-password {
            position: absolute;
            right: 10px;
            cursor: pointer;
            font-size: 18px;
            color: #666;
        }

        .toggle-password:hover {
            color: #000;
        }