/*
|--------------------------------------------------------------------------
| Start Investing — Platform Feature Slider
|--------------------------------------------------------------------------
*/

.platform {
    background: var(--white);
}

.platform-inner {
    max-width: 1200px;
    margin: 0 auto;
}

/* Slider container */
.platform-slider {
    position: relative;
    margin-top: var(--space-2xl);
}

.platform-slide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}

.platform-slide.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

/* Text side */
.platform-slide-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.platform-slide-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-xl);
    background: var(--blue-100);
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-slide-icon svg {
    width: 24px;
    height: 24px;
    color: var(--blue-600);
}

.platform-slide-title {
    font-family: var(--font-serif);
    font-size: clamp(26px, 2.5vw, 34px);
    font-weight: 400;
    color: var(--blue-900);
    line-height: 1.2;
}

.platform-slide-desc {
    font-size: var(--text-xl);
    color: var(--gray-400);
    line-height: 1.75;
}

/* Image side */
.platform-slide-visual {
    background: var(--blue-50);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.platform-slide-visual span {
    color: var(--gray-400);
    font-size: var(--text-sm);
    letter-spacing: 1px;
    padding: var(--space-4xl) var(--space-2xl);
}

.platform-slide-visual img {
    width: 100%;
    height: auto;
    max-height: 380px;
    object-fit: contain;
    display: block;
}

/*
|--------------------------------------------------------------------------
| Platform Tabs (keywords below slider)
|--------------------------------------------------------------------------
*/

.platform-tabs {
    display: flex;
    gap: 0;
    margin-top: var(--space-2xl);
    border-top: 1px solid var(--gray-100);
    position: relative;
}

.platform-tab {
    flex: 1;
    padding: var(--space-lg) var(--space-md);
    background: none;
    border: none;
    cursor: pointer;
    text-align: center;
    font-family: var(--font-sans);
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--gray-400);
    position: relative;
    transition: color var(--transition);
}

.platform-tab::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--blue-600);
    transform: scaleX(0);
    transition: transform 0.35s var(--ease);
}

.platform-tab:hover {
    color: var(--blue-900);
}

.platform-tab.active {
    color: var(--blue-900);
}

.platform-tab.active::before {
    transform: scaleX(1);
}

/* Progress bar inside tab */
.platform-tab-progress {
    position: absolute;
    top: -1px;
    left: 0;
    height: 2px;
    background: var(--blue-600);
    width: 0%;
    transition: none;
}

.platform-tab.active::before {
    transform: scaleX(0);
    /* hidden when progress bar is active */
}

.platform-tab-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.platform-tab-label svg {
    width: 16px;
    height: 16px;
    opacity: 0.5;
    transition: opacity var(--transition);
}

.platform-tab.active .platform-tab-label svg {
    opacity: 1;
    color: var(--blue-600);
}

/*
|--------------------------------------------------------------------------
| Start Investing — Intro / Highlights
|--------------------------------------------------------------------------
*/

.si-intro {
    background: var(--gray-50);
}

.si-intro-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
}

.si-intro-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.si-intro-desc {
    font-size: var(--text-xl);
    color: var(--gray-400);
    line-height: 1.75;
}

/*
|--------------------------------------------------------------------------
| Start Investing — Register Section
|--------------------------------------------------------------------------
*/

.si-register {
    background: var(--white);
}

.si-register-inner {
    max-width: 720px;
    margin: 0 auto;
}

/* Radio group */
.form-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.form-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: var(--gray-50);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--gray-500);
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.form-radio:hover {
    border-color: var(--blue-300);
    background: var(--blue-50);
}

.form-radio input[type="radio"] {
    accent-color: var(--blue-600);
    width: 16px;
    height: 16px;
    margin: 0;
    cursor: pointer;
}

.form-radio:has(input:checked) {
    border-color: var(--blue-500);
    background: var(--blue-50);
    color: var(--blue-900);
    font-weight: 500;
}

/* Consent checkboxes */
.form-consents {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--gray-100);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--gray-500);
    line-height: 1.55;
}

.form-checkbox input[type="checkbox"] {
    accent-color: var(--blue-600);
    width: 18px;
    height: 18px;
    min-width: 18px;
    margin-top: 1px;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.form-checkbox a {
    color: var(--blue-600);
    text-decoration: underline;
    text-decoration-color: var(--blue-100);
    text-underline-offset: 2px;
    transition: var(--transition);
}

.form-checkbox a:hover {
    text-decoration-color: var(--blue-600);
}



/*
|--------------------------------------------------------------------------
| Responsive — Start Investing
|--------------------------------------------------------------------------
*/

@media (max-width: 900px) {
    .platform-slide {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .platform-slide-text {
        order: 1;
    }

    .platform-slide-visual {
        order: 2;
    }

    .platform-tabs {
        flex-wrap: wrap;
    }

    .platform-tab {
        flex: 1 1 50%;
        font-size: var(--text-sm);
    }

    .si-intro-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 540px) {
    .platform-tab {
        flex: 1 1 100%;
    }
}