:root {
        --orange: #FF5C00;
        --orange-light: #FFF3EE;
        --dark: #121212;
        --grey: #6B7280;
        --border: #EBEBEB;
        --radius: 14px;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

    body {
        font-family: 'DM Sans', sans-serif;
        background: #F7F7F7;
        color: var(--dark);
        margin: 0;
        min-height: 100vh;
    }

    h1,h2,h3,h4,h5 {
        font-family: 'Syne', sans-serif;
    }

    /* NAVBAR */
    .navbar {
        background: #fff;
        border-bottom: 1px solid var(--border);
        padding: 10px 0;
    }

    .navbar-brand {
        font-family: 'Syne', sans-serif;
        font-weight: 800;
        font-size: 20px;
        color: var(--dark);
        text-decoration: none;
    }

    /* PAGE */
    .auth-wrapper {
        min-height: calc(100vh - 57px);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 30px 16px;
    }

    .auth-card {
        background: #fff;
        border-radius: 20px;
        border: 1px solid var(--border);
        padding: clamp(24px, 5vw, 40px);
        width: 100%;
        max-width: 480px;
        box-shadow: 0 4px 32px rgba(0, 0, 0, 0.07);
    }

    .auth-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 24px;
        justify-content: center;
    }

    .auth-logo-icon {
        width: 40px;
        height: 40px;
        background: var(--orange);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .auth-logo-text {
        font-family: 'Syne', sans-serif;
        font-weight: 800;
        font-size: 22px;
        color: var(--dark);
    }

    .auth-title {
        font-size: clamp(20px, 4vw, 26px);
        font-weight: 800;
        text-align: center;
        margin-bottom: 6px;
    }

    .auth-subtitle {
        font-size: 14px;
        color: var(--grey);
        text-align: center;
        margin-bottom: 26px;
    }

    /* STEPS */
    .steps {
        display: flex;
        align-items: center;
        margin-bottom: 28px;
    }

    .step {
        display: flex;
        flex-direction: column;
        align-items: center;
        flex: 1;
    }

    .step-circle {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        font-weight: 700;
        font-family: 'Syne', sans-serif;
        background: #f0f0f0;
        color: var(--grey);
        transition: all 0.3s;
    }

    .step.active .step-circle {
        background: var(--orange);
        color: #fff;
    }

    .step.done .step-circle {
        background: #22c55e;
        color: #fff;
    }

    .step-label {
        font-size: 11px;
        color: var(--grey);
        margin-top: 4px;
        text-align: center;
    }

    .step.active .step-label {
        color: var(--orange);
        font-weight: 500;
    }

    .step-line {
        flex: 1;
        height: 2px;
        background: var(--border);
        margin: 0 4px;
        margin-bottom: 18px;
        transition: background 0.3s;
    }

    .step-line.done {
        background: var(--orange);
    }

    /* FORM */
    .form-label {
        font-size: 13px;
        font-weight: 500;
        color: var(--dark);
        margin-bottom: 5px;
    }

    .form-control {
        border: 1.5px solid var(--border);
        border-radius: 10px;
        padding: 11px 14px;
        font-size: 14px;
        font-family: 'DM Sans', sans-serif;
        transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-control:focus {
        border-color: var(--orange);
        box-shadow: 0 0 0 3px rgba(255, 92, 0, 0.12);
        outline: none;
    }

    .form-control.is-valid {
        border-color: #22c55e;
    }

    .form-control.is-invalid {
        border-color: #ef4444;
    }

    .input-group .form-control {
        border-right: none;
        border-radius: 10px 0 0 10px;
    }

    .input-group .btn-eye {
        border: 1.5px solid var(--border);
        border-left: none;
        border-radius: 0 10px 10px 0;
        background: #fff;
        color: var(--grey);
        cursor: pointer;
        padding: 0 14px;
        transition: color 0.15s;
    }

    .input-group .btn-eye:hover {
        color: var(--orange);
    }

    .input-group:focus-within .form-control,
    .input-group:focus-within .btn-eye {
        border-color: var(--orange);
    }

    /* PASSWORD STRENGTH */
    .password-strength {
        margin-top: 8px;
    }

    .strength-bars {
        display: flex;
        gap: 4px;
        margin-bottom: 4px;
    }

    .strength-bar {
        flex: 1;
        height: 4px;
        border-radius: 2px;
        background: var(--border);
        transition: background 0.3s;
    }

    .strength-bar.weak {
        background: #ef4444;
    }

    .strength-bar.medium {
        background: #f59e0b;
    }

    .strength-bar.strong {
        background: #22c55e;
    }

    .strength-text {
        font-size: 12px;
        color: var(--grey);
    }

    /* PHONE FLAG */
    .phone-group {
        display: flex;
        gap: 8px;
    }

    .country-select {
        border: 1.5px solid var(--border);
        border-radius: 10px;
        padding: 11px 10px;
        font-size: 14px;
        background: #fff;
        cursor: pointer;
        flex-shrink: 0;
        color: var(--dark);
        outline: none;
    }

    .country-select:focus {
        border-color: var(--orange);
    }

    .phone-group .form-control {
        flex: 1;
    }

    /* BUTTONS */
    .btn-submit {
        background: var(--orange);
        color: #fff;
        border: none;
        border-radius: 10px;
        padding: 13px;
        width: 100%;
        font-size: 15px;
        font-weight: 600;
        font-family: 'Syne', sans-serif;
        cursor: pointer;
        transition: background 0.2s, transform 0.1s;
    }

    .btn-submit:hover {
        background: #e04f00;
    }

    .btn-submit:active {
        transform: scale(0.98);
    }

    .btn-back {
        background: #fff;
        color: var(--dark);
        border: 1.5px solid var(--border);
        border-radius: 10px;
        padding: 12px;
        font-size: 14px;
        font-weight: 500;
        font-family: 'Syne', sans-serif;
        cursor: pointer;
        transition: border-color 0.2s;
    }

    .btn-back:hover {
        border-color: var(--dark);
    }

    /* DIVIDER */
    .divider {
        display: flex;
        align-items: center;
        gap: 12px;
        color: var(--grey);
        font-size: 13px;
        margin: 20px 0;
    }

    .divider::before,
    .divider::after {
        content: '';
        flex: 1;
        border-top: 1px solid var(--border);
    }

    /* SOCIAL */
    .btn-social {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        border: 1.5px solid var(--border);
        border-radius: 10px;
        padding: 11px;
        font-size: 14px;
        font-weight: 500;
        background: #fff;
        color: var(--dark);
        cursor: pointer;
        transition: border-color 0.2s, box-shadow 0.2s;
        text-decoration: none;
        width: 100%;
    }

    .btn-social:hover {
        border-color: #aaa;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.07);
        color: var(--dark);
    }

    /* CGU */
    .form-check-input:checked {
        background-color: var(--orange);
        border-color: var(--orange);
    }

    .cgu-text {
        font-size: 12.5px;
        color: var(--grey);
        line-height: 1.5;
    }

    .cgu-text a {
        color: var(--orange);
        text-decoration: none;
    }

    /* FOOTER */
    .auth-footer {
        text-align: center;
        font-size: 13.5px;
        color: var(--grey);
        margin-top: 22px;
    }

    .auth-link {
        color: var(--orange);
        text-decoration: none;
        font-weight: 500;
    }

    .auth-link:hover {
        text-decoration: underline;
    }

    /* STEP PANELS */
    .step-panel {
        display: none;
    }

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

    /* SUCCESS */
    .success-icon {
        width: 72px;
        height: 72px;
        border-radius: 50%;
        background: #dcfce7;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
    }

    @keyframes spin {
        from {
            transform: rotate(0deg);
        }

        to {
            transform: rotate(360deg);
        }
    }