:root {
    --s1: 0.25rem;
    --s2: 0.5rem;
    --s3: 0.75rem;
    --s4: 1rem;
    --s6: 1.5rem;

    --radius: 12px;
    --fast: 100ms ease;
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

*, *::before, *::after { box-sizing: border-box; }
html { scrollbar-gutter: stable; }
@supports not (scrollbar-gutter: stable) { html { overflow-y: scroll; } }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: "Inter", system-ui, -apple-system, Helvetica, sans-serif;
    font-weight: 500;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    min-height: 100svh;
}
a { color: var(--link); text-decoration: none; transition: var(--fast); }
a:hover { color: var(--link-hover); transition: var(--fast); }

.app {
    flex: 1 0 auto;
    display: flex;
    min-height: 0;
}
.navbar {
    width: clamp(220px, 24vw, 300px);
    background: var(--panel1);
    padding: var(--s4) var(--s2);
    display: flex;
    flex-direction: column;
    gap: var(--s2);
}
.navbar__logo {
    display: block;
    text-align: center;
    padding: var(--s2);
    margin-bottom: var(--s2);
}
.navbar__logo img { max-width: 100px; height: auto; } /* TO DO: MAKE BIGGER */
.navbar__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--s2);
    margin: 0;
    padding: 0;
}
.navbar__spacer { flex: 1; }
.navbar__link {
    display: block;
    text-decoration: none;
    color: var(--text);
    background: var(--panel2);
    padding: var(--s3);
    border-radius: var(--radius);
    margin-inline: var(--s2);
    transition: margin-inline var(--fast), background-color var(--fast), transform var(--fast);
}
.navbar__link:hover { background: var(--panel3); margin-inline: 0; }
.navbar__link:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.navbar__link[aria-current="page"] { background: var(--panel3); }

#content {
    flex: 1 1 auto;
    min-width: 0;
    padding: var(--s4);
    background: var(--panel2);
    position: relative;
}
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--s4);
    margin-bottom: var(--s4);
}
.header > h1 { min-width: 0; }



.settings {
    display: flex;
    align-items: center;
    gap: var(--s2);
    flex-wrap: wrap;
    margin-inline-start: auto;
    flex: 0 0 auto;
}
.settings .language {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    background: var(--panel1);
    border-radius: var(--radius);
    padding: 2px;

    --pos: 0;
    --pad: 4px;
    --count: 3;

    padding: var(--pad);
}
.settings .language input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.settings .language label {
    z-index: 1;
    text-align: center;
    padding: calc(var(--s2) - var(--pad)) calc(var(--s4) - var(--pad));
    font-weight: 600;
    user-select: none;
    cursor: pointer;
    color: var(--muted1);
    background: transparent;
    border-radius: calc(var(--radius) - var(--pad));
}
.settings .language .highlight {
    position: absolute;

    top: var(--pad);
    bottom: var(--pad);
    left: var(--pad);

    width: calc((100% - (var(--pad) * 2)) / var(--count));

    background: var(--panel3);
    border-radius: calc(var(--radius) - var(--pad));
    transition: transform var(--fast);
    transform: translateX(calc(var(--pos) * 100%));
    will-change: transform;
    pointer-events: none;
}
.settings .language:has(#lang-ro:checked) { --pos: 0; }
.settings .language:has(#lang-ru:checked) { --pos: 1; }
.settings .language:has(#lang-en:checked) { --pos: 2; }
  
.settings .language:has(#lang-ro:checked) label[for="lang-ro"],
.settings .language:has(#lang-ru:checked) label[for="lang-ru"],
.settings .language:has(#lang-en:checked) label[for="lang-en"] {
    color: var(--text);
}
.settings .language:has(#lang-ro:focus-visible) label[for="lang-ro"],
.settings .language:has(#lang-ru:focus-visible) label[for="lang-ru"],
.settings .language:has(#lang-en:focus-visible) label[for="lang-en"] {
    outline: 2px solid #8fa2ff;
    outline-offset: 2px;
}
@media (max-width: 420px) {
    .settings .language label { padding: var(--s-2) var(--s-3); }
}
.settings .theme {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--s2);
    padding: var(--s2) var(--s3);
    background: var(--panel1);
    color: var(--text);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color var(--fast), transform var(--fast);
}
.settings .theme:hover { background: var(--panel-3); }
.settings .theme:active { transform: translateY(1px); }
  
.settings .theme .icon { width: 20px; height: 20px; display: block; transition: opacity var(--fast), transform var(--fast); }
.settings .theme .moon { opacity: 0; transform: scale(0.9) rotate(-8deg); }
.settings .theme .sun  { opacity: 1; transform: scale(1) rotate(0deg); }
  
.settings .theme[aria-pressed="true"] .moon { opacity: 1; transform: scale(1) rotate(0deg); }
.settings .theme[aria-pressed="true"] .sun  { opacity: 0; transform: scale(0.9) rotate(8deg); }

/* ICONS */
.icon {
    width: 20px;
    height: 20px;
    display: inline-block;
  
    background: var(--icon-color, var(--icon-default));
  
    -webkit-mask: var(--icon-src) center / contain no-repeat;
    mask: var(--icon-src) center / contain no-repeat;
}  
.icon--edit   { --icon-src: url("../assets/icons/edit.svg");   --icon-color: var(--icon-success); }
.icon--save   { --icon-src: url("../assets/icons/save.svg");   --icon-color: var(--icon-success); }
.icon--delete { --icon-src: url("../assets/icons/delete.svg"); --icon-color: var(--icon-danger); }

.icon--phone    { --icon-src: url("../assets/icons/phone.svg"); }
.icon--email    { --icon-src: url("../assets/icons/email.svg"); }
.icon--location { --icon-src: url("../assets/icons/location.svg"); }


.card {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius);
    padding: var(--s4);
    height: 100%;
}

.footer {
    background: linear-gradient(var(--panel1), var(--bg));
    border-top: solid 1px var(--panel3); 
    color: var(--muted);
    text-align: center;
    padding: var(--s4) var(--s6) var(--s2);
}  
.footer__list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--s4);
    margin: 0 0 var(--s2);
    padding: 0;
}
.footer__info { display: flex; align-items: center; gap: var(--s2); }
.footer__info img { width: 20px; height: 20px; }
.footer__list > h2 { font-size: 1rem; margin: 0; }
.footer__legal { font-size: 0.875rem; color: var(--muted2); margin: 0; }
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px; height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    position: fixed;
    left: var(--s2);
    top: var(--s2);
    width: auto; height: auto;
    padding: var(--s2) var(--s4);
    background: var(--panel3);
    color: var(--text);
    border-radius: var(--radius);
    z-index: 9999;
}

@media (max-width: 800px) {
    .app { flex-direction: column; }
    .navbar {
        width: auto;
        flex-direction: row;
        align-items: center;
        gap: var(--s2);
    }
    .brand { margin: 0; padding: 0; }
    .navbar__spacer { display: none; }
    .navbar__list { 
        flex-direction: row; 
        flex-wrap: wrap; 
        gap: var(--s2);
    }
    .navbar__link { margin-inline: 0; }
}

/* CALCULATOR */
.calculator__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--s6);
    align-items: start;
}
.calculator__column {
    display: grid;
    gap: var(--s4);
    min-width: 0;
}
@media (max-width:1024px){
    .calculator__grid { grid-template-columns: 1fr; }
}

/* PANELS */
.panel {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: var(--radius);
    padding: var(--s4);
}
.panel > * + * { margin-top: var(--s4); }
.panel__title { font-size: .9rem; font-weight: 600; margin: 0 0 var(--s3); }
.panel__error {
    position: absolute;
    top: var(--s4);
    left: 50%;
    transform: translate(-50%, -8px);
    z-index: 1000;

    padding: .35rem .6rem;
    background: var(--toast-bg);
    color: var(--toast-text);
    border: 1px solid var(--toast-border);
    border-radius: 6px;
    font-size: .8rem;

    opacity: 0;
    pointer-events: none;
    transition: opacity 150ms ease, transform 150ms ease;
}
.panel__error--visible {
    opacity: 1;
    transform: translateY(-50%, 0);
    pointer-events: none;
}
/* RESULTS PANEL */
.panel--full { grid-column: 1 / -1; }

/* COMPOSITION */
.cluster { display: flex; gap: var(--s3); flex-wrap: wrap; align-items: flex-end; }
.stack   { display: grid; gap: var(--s3); }

/* FIELDS */
.field { display: grid; gap: .35rem; flex: 1 1 160px; min-width: 0; }
.field__label { min-height: 1.1rem; font-size: .8rem; color: var(--muted1); }
.field__input {
    background: var(--field-bg); color: var(--field-text);
    border: 1px solid var(--field-border); border-radius: 6px;
    padding: .5rem .6rem; font-size: .9rem;
}
.field__input--error {
    border-color: var(--field-error) !important;
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--field-error) 35%, transparent);
}
.field--nolabel { padding-top: 1.1rem; }
textarea.field__input { resize: vertical; }

/* OPTIONAL FIELDS */
.field--optional { display: none; }
.calculator:has(#input-period option[value="custom"]:checked) #input-period-custom {
    display: grid;
}

/* CHECKBOXES */
.checkbox {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
    font-size: .8rem;
    color: var(--muted1);
}
.checkbox input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: #f0f0f4;
  background-color: #ffffff;
  border: 1px solid #cfd1e6;
  border-radius: 4px;
  vertical-align: middle;
}

/* TABLE WRAPPER */
.table {
    background: var(--table-bg);
    color: var(--table-text);
    border: 1px solid var(--table-border);
    border-radius: 6px;
    overflow: hidden;
}
.table table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}
.table__head { background: var(--table-head); }
.table th, .table td {
    padding: .5rem .6rem;
    font-size: .8rem;
    text-align: left;

    border-bottom: 1px solid var(--table-border);
    border-right: 1px solid var(--table-border);
}
.table__body tr { transition: background-color 140ms ease; }
.table th:last-child, .table td:last-child { border-right: none; } /* NO VERTICAL BORDER ON LAST COLUMN */
.table__body tr:last-child td { border-bottom: none; } /* NO HORIZONTAL BORDER ON LAST ROW */
/* MAKE FIRST AND LAST COLUMNS NARROWER, (MAYBE) TO-DO: MAKE FIRST COLUMN PERFECT FIT */ 
.table th:first-child, .table td:first-child { width: 15%; white-space: nowrap; }
.table th:last-child, .table td:last-child { width: 20%; text-align: center; }
/* ZEBRA STRIPPING + HOVER (BODY ONLY) */
.table__body tr:nth-child(odd):not(.table__total-row) { background: var(--table-zebra-odd); }
.table__body tr:nth-child(even):not(.table__total-row) { background: var(--table-zebra-even); }
.table__body tr:hover:not(.table__total-row) { background: var(--table-hover); }
/* TOTAL ROW STYLING */
.table__body tr.table__total-row { background: var(--table-bg); font-weight: 600; }
.table__body tr.table__total-row:hover { background: var(--table-bg); } /* TO-DO: MAKE HOVERING OVER ROWS SMOOTHER */
.table td > .field__input {
    width: 100%;
    box-sizing: border-box;
    padding: .3rem .4rem;
    font-size: .8rem;
    line-height: 1.2;
}
.table__row--editing td {
    padding-top: 0.50rem;
    padding-bottom: 0.50rem;
    background: var(--table-edit);
    border-top: 2px solid var(--table-edit-border);
    border-bottom: 2px solid var(--table-edit-border);
    transition: color 60ms ease;
}
.table__row--editing td:first-child { border-left: 2px solid var(--table-edit-border); }
.table__row--editing td:last-child { border-right: 2px solid var(--table-edit-border); }
.table__body tr.table__row--editing:hover td { background: var(--table-edit); }

/* BUTTONS */
.btn {
    flex: 0 0 auto;
    border: none;
    border-radius: 6px;
    padding: .45rem .9rem;
    font-size: .85rem;
    cursor: pointer;
    background: var(--btn-primary);
    color: var(--panel1);
    transition: transform 120ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--btn-primary); color: var(--panel1); }
.btn--success { background: var(--btn-success); color: #FFFFFF; }
.btn--ghost { background: transparent; border: 1px solid color-mix(in srgb, var(--btn-text) 12%, transparent); color: inherit; }
.btn--ghost.btn--success { border-color: var(--btn-success); color: var(--btn-success); background: var(--panel1); }
.btn--ghost.btn--info    { border-color: var(--btn-primary); color: var(--btn-primary); background: var(--panel1); }
.row-btn {
    background: transparent;
    border: none;
    padding: 0.1rem;
    cursor: pointer;
    transition: opacity 120ms ease, transform 120ms ease;
}
.row-btn__icon {
    display: block;
    width: 16px;
    height: 16px;
}
.row-btn__icon--delete { transform: translateY(-0.5px); } /* I THINK IT LOOKS BETTER */
.row-btn--disabled { opacity: 0.4; }

/* ACTION ROW */
.actions { display:flex; gap: var(--s3); flex-wrap: wrap; }

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] { moz-appearance: textfield; }