/* ======================================= */
/* 1. FONT DEFINITIONS */
/* ======================================= */
@font-face {
    font-family: "UniSans-Trial";
    src: url("static/fonts/UniSans-Trial-Bold.otf") format("otf");
    font-weight: 700;
    font-style: normal;
}

/* ======================================= */
/* 2. CSS VARIABLES (ROOT) */
/* ======================================= */
:root {
    /* Base Font & Sizing */
    font-family: 'Open Sans', sans-serif;
    font-size: 16px; /* Base font size, 1rem = 16px */

    /* Typography Variables */
    --font-primary: 'Open Sans', sans-serif;
    --font-secondary: "UniSans-Trial", sans-serif;
    --font-weight-regular: 500;
    --font-weight-medium: 600;
    --font-weight-bold: 700;

    /* Color Palette */
    --color-blue-dark: #164FA4; /* Formerly --title-color, --bright-font-color, timer-text-color, section-block-header color, question-text-before-bg, question-link-color */
    --color-blue-light: #9CCCEA; /* Formerly --main-bg-color, input-border-color */
    --color-blue-pale: #C4DFF4; /* Formerly question-header-bg */
    --color-blue-very-pale: #DEEDFA; /* Formerly section-block-title-bg, section-block-inner-bg, option-checked-bg */
    --color-blue-accent: #D1E6F7; /* Formerly --accent-bg-color */
    --color-blue-progress: #7CBDE2; /* Progress line color */

    --color-text-dark: #333333; /* Formerly --main-font-color, sidepanel-border-color */
    --color-text-light: #FFFFFF; /* White text color */
    --color-text-disabled: #666666; /* Disabled button text color */

    --color-button-main: #E84C19;
    --color-button-alt1: #ED622D;
    --color-button-alt2: #F37743;
    --color-button-disabled: #DADADA;

    --color-grey-border: #E8E8E8; /* Formerly subtest-header-border, progress-line-bg, fieldset-wrapper-border */
    --color-grey-background: #F4F4F4; /* Formerly --accent-not-selected-color, option-bg */
    --color-grey-toast: #333; /* Toast background color */

    --color-red: #EF233C;

    /* Spacing & Sizing Variables */
    --spacing-xs: 4px;
    --spacing-sm: 5px;
    --spacing-md: 8px;
    --spacing-lg: 10px;
    --spacing-xl: 12px;
    --spacing-2xl: 16px;
    --spacing-3xl: 20px;
    --spacing-4xl: 24px;
    --spacing-5xl: 30px;
    --spacing-6xl: 32px;
    --spacing-7xl: 40px;
    --spacing-8xl: 64px;

    /* Border Radius Variables */
    --radius-sm: 4px;
    --radius-md: 5px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --radius-2xl: 12px;
    --radius-full: 50%;
}

/* ======================================= */
/* 3. GLOBAL STYLES */
/* ======================================= */

body {
    margin: 0;
}

img {
    width: 100%;
}

p {
    font-weight: 500;
}

h1 {
    font-size: clamp(1.25rem, 1.0711rem + 0.7952vw, 1.75rem);
    /* font-size: 1.75em; */
}

h2 {
    font-size: clamp(1rem, 0.8211rem + 0.7952vw, 1.5rem);
    /* font-size: 1.5em; */
}

h3 {
    font-size: clamp(1rem, 0.9105rem + 0.3976vw, 1.25rem);
    /* font-size: 1.25em; */
    color: var(--color-blue-dark);
}

.mt-0 {
    margin-top: 0;
    margin-bottom: 0;
}

.hidden:not(.force-visible) {
    display: none !important;
}

/* ======================================= */
/* 4. BUTTONS & LINKS */
/* ======================================= */
button,
a[type="button"] {
    display: flex;
    font-size: 1.125rem; /* 18px / 16px = 1.125rem */
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    color: var(--color-text-light);
    padding: var(--spacing-xl) var(--spacing-3xl); /* 12px 20px */
    border-radius: var(--radius-lg);
    border: none;
    text-transform: uppercase;
    text-decoration: none;
    background-color: var(--color-button-main);
    cursor: pointer;
}
.btn-alt1:is(button,a[type="button"]) {
        background-color: var(--color-button-alt1);
    }
.btn-alt2:is(button,a[type="button"]) {
        background-color: var(--color-button-alt2);
    }
:is(button,a[type="button"]):disabled {
        background-color: var(--color-button-disabled);
        color: var(--color-text-disabled);
        cursor: not-allowed;
    }
:is(button,a[type="button"]) img {
        width: fit-content;
    }

/* ======================================= */
/* 5. FORM ELEMENTS (INPUTS, SELECTS) */
/* ======================================= */
input[type="number"],
input[type="text"],
input[type="date"],
select {
    max-width: 350px;
    color: black;
    width: 100%;
    height: 3rem; /* 48px / 16px = 3rem */
    border: 1px solid var(--color-blue-light);
    border-radius: 1.5rem; /* 24px / 16px = 1.5rem */
    padding: 0 var(--spacing-4xl); /* 0 24px */
    font-size: 1rem; /* 16px */
    background-color: var(--color-text-light); /* white */
    appearance: textfield;
    box-sizing: border-box;

}

.select-wrapper {
    display: flex;
    position: relative;
    justify-content: end;
    min-width: 350px;
    width: 100%;
}

select {
    appearance: none;
    -moz-appearance: none;
    -webkit-appearance: none;
    color: black;
}
.select-wrapper::after {
    content: url(/static/img/icons/arrow_down.svg);
    position: absolute;
    top: 50%;
    right: 25px;
    width: 24px;
    height: 24px;
    transform: translateY(-50%);
    pointer-events: none;
}



/* Radio/Checkbox custom styles */
input[type='radio'],
input[type='checkbox'] {
    display: none;
}
:is(input[type='radio'],input[type='checkbox'])  + span,:is(input[type='radio'],input[type='checkbox'])  + label {
        display: flex;
        align-items: center;
        gap: var(--spacing-2xl); /* 16px */
        cursor: pointer;
        position: relative;
        padding-left: var(--spacing-xl); /* 12px */
        line-height: 1.125rem; /* 18px / 16px = 1.125rem */
        user-select: none;
    }
:is(:is(input[type='radio'],input[type='checkbox']) + span,:is(input[type='radio'],input[type='checkbox']) + label)::before {
            content: "";
            display: inline-block;
            width: 1.5rem; /* 24px */
            height: 1.5rem; /* 24px */
            background: url(/static/img/radio/inactive.svg) 0 0 no-repeat;
        }
:is(input[type='radio'],input[type='checkbox']):checked + span:before,:is(input[type='radio'],input[type='checkbox']):checked + label:before {
        background: url(/static/img/radio/active.svg) 0 0 no-repeat;
    }
:is(input[type='radio'],input[type='checkbox']):hover:not(:checked) + span:before,:is(input[type='radio'],input[type='checkbox']):hover:not(:checked) + label:before {
        background: url(/static/img/radio/hover.svg) 0 0 no-repeat;
    }

input:user-invalid,
select:user-invalid {
    border: 1px solid var(--color-red);
}



.form-group {
    display: flex;
    flex-direction: row;
    /* flex-wrap: wrap; */
    /* gap: var(--spacing-sm); */
    justify-content: space-between;
    align-items: center;
}



.form-group .radio-groups {
        display: inline-flex;
        width: fit-content;
        justify-content: start;
        gap: var(--spacing-4xl); /* 24px */
    }



:is(.form-group .radio-groups) label {
            padding-left: unset;
        }



.form-group select {
        color: #7A7A7A;
    }



:is(.form-group select):valid {
            color: black;
        }

/* ======================================= */
/* 6. TOAST NOTIFICATIONS */
/* ======================================= */
#toast-container {
    position: fixed;
    bottom: 1.25rem; /* 20px */
    right: 1.25rem; /* 20px */
    display: flex;
    flex-direction: column-reverse; 
    gap: var(--spacing-lg); /* 10px */
    z-index: 1000;
}

.toast {
    background-color: var(--color-grey-toast);
    color: var(--color-text-light);
    padding: var(--spacing-lg) 0.9375rem; /* 10px 15px */
    border-radius: var(--radius-md); /* 5px */
    box-shadow: 0 0.125rem 0.625rem rgba(0, 0, 0, 0.2); /* 0 2px 10px */
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.toast.show {
    opacity: 1;
}

/* ======================================= */
/* 7. LAYOUT & PAGE STRUCTURE */
/* ======================================= */

.main-body {
    margin-top: 48px;
}

#main-form {
    display: flex;
    margin-top: 20px;
    flex-direction: row;
    flex-wrap: wrap-reverse;
    justify-content: center;
    gap: var(--spacing-7xl); /* 40px */
}

/* --- Title Page --- */
.title-page {
    width: 100%;
    align-content: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-8xl); /* 64px */
}
.title-page .info-segment {
        display: flex;
        flex-wrap: wrap;
        max-width: 1100px;
        width: 100%;
        /* margin-top: 20px; */
    }
:is(.title-page .info-segment):nth-child(2) {
            flex: 1 2 0;
        }
:is(.title-page .info-segment) img {
            height: auto;
            max-width: 430px;
        }
.title-page .form-segment {
        width: 100%;
    }
:is(.title-page .form-segment) button {
            max-width: 300px;
            margin: auto;
        }

/* --- Section Title Block --- */
#section-block-title {
    width: 100%;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    background-color: var(--color-blue-very-pale);
    padding: 0 var(--spacing-7xl) 5rem var(--spacing-7xl); /* 40px 40px 80px 40px */
}
#section-block-title h3 {
        text-align: center;
        font-size: 1.25rem; /* 20px */
        font-weight: var(--font-weight-medium);
        color: var(--color-blue-dark);
        margin: 40px 0;
    }
#section-block-title #question-block-title {
        max-width: 540px;
        width: 100%;
        margin: 0 var(--spacing-sm); /* 0 5px */
    }
:is(#section-block-title #question-block-title) .intro-form-body {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-4xl); /* 24px */
        }

/* --- Section Block Header --- */
.section-block-header {
    font-family: var(--font-secondary), var(--font-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2xl); /* 16px */
    padding: 0; 
    min-height: 7.25rem; /* 100px */
    width: 100%;
}
.section-block-header .text-header {
        color: var(--color-blue-dark);
        text-align: center;
        text-transform: uppercase;
        margin: 0;
    }
.section-block-header #subtest-header {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        margin: 20px 0 20px 0;
        gap: var(--spacing-5xl); /* 30px */
    }
:is(.section-block-header #subtest-header) .text-header-label {
            font-size: 1.125rem; /* 18px */
            text-transform: none;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm); /* 5px */
            padding: var(--spacing-sm) var(--spacing-2xl) var(--spacing-sm) var(--spacing-sm); /* 5px 16px 5px 5px */
            border-radius: 1.875rem; /* 30px */
            border: 1px solid var(--color-grey-border);
        }
:is(:is(.section-block-header #subtest-header) .text-header-label) img {
                width: 2.5rem; /* 40px */
                height: 2.5rem; /* 40px */
            }
:is(:is(.section-block-header #subtest-header) .text-header-label) p {
                margin: 0;
            }
:is(.section-block-header #subtest-header):has(div) {
            /* margin: 0; */
        }

.start-button {
    margin-top: 24px;
}

/* --- Section Block --- */
.section-block {
    width: 683px; /* Kept px for max-width, assuming fixed layout constraint */
}
.section-block .section-questions {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-2xl); /* 16px */
    }

.section-block-inner {
    display: flex;
    box-sizing: border-box;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    gap: var(--spacing-3xl); /* 20px */
    padding: var(--spacing-5xl); /* 30px */
    border-radius: var(--radius-2xl); /* 12px */
    background-color: var(--color-blue-very-pale);
}

/* --- Question Block --- */
.question-block-description {
    font-weight: var(--font-weight-regular);
    line-height: 1.5rem; /* 24px */
}

.question-block {
    width: 100%;
}

.question-block .question-header {
        background-color: var(--color-blue-pale);
        padding: var(--spacing-3xl); /* 20px */
        border-radius: var(--radius-xl) var(--radius-xl) 0 0; /* 10px */
    }

:is(.question-block .question-header) .question-text {
            display: flex;
            flex-direction: row;
            /* align-items: center; */
            gap: var(--spacing-3xl); /* 20px */   
        }

:is(:is(.question-block .question-header) .question-text) .question-text-inner {
                display: flex;
                flex-direction: column;
                margin-top: var(--spacing-lg); /* 10px */
            }

:is(:is(.question-block .question-header) .question-text) *:nth-child(1) {
                margin: auto 0;
            }

:is(.question-block .question-header) .question-text::before {
            display: flex;
            flex-shrink: 0;
            align-items: center;
            justify-content: center;
            content: attr(data-index);
            background-color: var(--color-blue-dark);
            width: 2.5rem; /* 40px */
            height: 2.5rem; /* 40px */
            border-radius: 1.25rem; /* 20px */
            color: var(--color-text-light);
        }

.question-block .fieldset-wrapper {
        margin: 0;
        padding: var(--spacing-lg); /* 10px */
        border: 1px solid var(--color-grey-border);
        border-radius: 0 0 var(--radius-xl) var(--radius-xl); /* 10px */
        display: flex;
        gap: var(--spacing-7xl); /* 40px */
    }

:is(.question-block .fieldset-wrapper) img {
            flex-basis: 25%;
            height: fit-content;
            width: fit-content;
        }

:is(.question-block .fieldset-wrapper) fieldset {
            width: 100%;
        }

:is(.question-block .fieldset-wrapper) img + fieldset {
            flex-basis: 75%;
        }

.question-block fieldset {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs); /* 4px */
        border: none;
        padding: 0;
    }

:is(.question-block fieldset):has(input[type="number"]) {
            flex-direction: row;
            align-items: center;
            gap: var(--spacing-4xl); /* 24px */
        }

:is(.question-block fieldset) .option {
            background-color: var(--color-grey-background);
            height: 3.125rem; /* 50px */
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: var(--spacing-3xl); /* 20px */
            border-radius: var(--radius-lg); /* 8px */
        }

:is(.question-block fieldset) .option:has(input:checked) {
            background-color: var(--color-blue-very-pale);   
        }

/* --- Result Text --- */
.result-text {
    font-size: 1rem; /* 16px */
    line-height: 1.5rem; /* 24px */
}
.result-text h2 {
        font-size: 1rem; /* 16px */
        font-weight: var(--font-weight-medium);
    }

/* ======================================= */
/* 8. SIDEPANEL */
/* ======================================= */
.sidepanel-wrapper {
    position: relative;
}

.sidepanel {
    position: sticky;
    margin-top: 0;
    top: 2.5rem; /* 40px */
    border: 1px solid  var(--color-grey-border);
    border-radius: var(--radius-2xl); /* 12px */
    box-sizing: border-box;
    width: 340px; /* Kept px, common sidebar size */
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-3xl); /* 20px */
    gap: var(--spacing-7xl); /* 40px */
}

.sidepanel .info {
        width: 100%;
    }

.sidepanel .percent-wrapper {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: var(--spacing-3xl) 0 var(--spacing-md) 0; /* 20px 0 8px 0 */
    }

:is(.sidepanel .percent-wrapper) p {
            margin: 0;
        }

:is(.sidepanel .percent-wrapper) #percent-completion-number {
            font-weight: var(--font-weight-medium);
            font-size: 1.5rem; /* 24px */
            color: var(--color-blue-dark);
        }

.sidepanel .progress-line {
        height: 0.625rem; /* 10px */
        width: 100%;
        border-radius: var(--radius-md); /* 5px */
        background-color: var(--color-grey-border);
    }

:is(.sidepanel .progress-line) .progress-line-completed {
            width: 0%;
            height: inherit;
            border-radius: inherit;
            background-color: var(--color-blue-progress);
            transition: width 0.5s ease-in-out;
        }

.full:is(:is(.sidepanel .progress-line) .progress-line-completed) {
                width: 100%;
            }

.sidepanel .timer-wrapper {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md); /* 8px */
        justify-content: start;
        align-items: center;
    }

:is(.sidepanel .timer-wrapper) .timer {
            font-weight: var(--font-weight-medium);
            font-size: 2.5rem; /* 40px */
            line-height: 2.75rem; /* 44px */
            color: var(--color-blue-dark);
        }

:is(.sidepanel .timer-wrapper) p {
            margin: 0;
        }

.sidepanel .question-list-wrapper {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

:is(.sidepanel .question-list-wrapper) p {
            text-align: center;
        }

.sidepanel .question-list {
        display: grid;
        grid-template-columns: repeat(7, minmax(2.5rem, 1fr)); /* 7 * 40px */
        gap: var(--spacing-xs); /* 4px */
    }

:is(.sidepanel .question-list) .question-link {
            width: 2.5rem; /* 40px */
            height: 2.5rem; /* 40px */
            border-radius: var(--radius-sm); /* 4px */
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--color-blue-dark);
            background-color: var(--color-grey-background);
        }

[data-completed]:is(:is(.sidepanel .question-list) .question-link) {
                background-color: var(--color-blue-accent);
            }

:is(:is(.sidepanel .question-list) .question-link) .question-number:hover {
                opacity: 60%;
            }

:is(.sidepanel .question-list) .question-link,:is(.sidepanel .question-list) a {
            cursor: pointer;
        }

.sidepanel .buttons {
        width: 100%;
    }

:is(.sidepanel .buttons) button {
            width: inherit;
        }