/* =========================================================
   COOKING GAS TRACKER & MANAGER
   GLOBAL WEBSITE STYLESHEET
========================================================= */


/* =========================================================
   ROOT VARIABLES
========================================================= */

:root {
    --primary: #6d3fb0;
    --primary-dark: #4b2a82;
    --primary-light: #8b5ac7;

    --blue: #168de2;
    --green: #16a66a;
    --orange: #f28c28;
    --red: #e4474f;
    --yellow: #f4c430;
    --cyan: #18a7a0;
    --pink: #e4477b;

    --bg: #f7f5fb;
    --card: #ffffff;
    --text: #17131d;
    --muted: #6e6875;
    --border: #e7e1ee;

    --header-bg: rgba(255, 255, 255, 0.96);

    --shadow: 0 10px 30px rgba(45, 25, 70, 0.08);

    --radius: 18px;
}


/* =========================================================
   DARK MODE VARIABLES
========================================================= */

body.dark {
    --bg: #121016;
    --card: #1d1921;
    --text: #f7f3fa;
    --muted: #b8afbf;
    --border: #342d39;

    --header-bg: rgba(18, 16, 22, 0.96);

    --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}


/* =========================================================
   RESET
========================================================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100%;
}

body {
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;

    background: var(--bg);
    color: var(--text);

    line-height: 1.5;

    transition:
        background-color 0.25s ease,
        color 0.25s ease;
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}


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

.container {
    width: min(1180px, calc(100% - 32px));
    margin-left: auto;
    margin-right: auto;
}


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

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;

    width: 100%;

    background: var(--header-bg);

    border-bottom: 1px solid var(--border);

    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}


.header-inner {
    min-height: 78px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 25px;
}


/* =========================================================
   BRAND
========================================================= */

.brand {
    display: inline-flex;
    align-items: center;

    gap: 11px;

    text-decoration: none;

    color: var(--text);

    min-width: 0;
}


.brand-logo {
    width: 52px;
    height: 52px;

    flex: 0 0 52px;

    object-fit: cover;

    border-radius: 14px;

    box-shadow:
        0 5px 15px rgba(0, 0, 0, 0.14);
}


.brand-text {
    display: flex;
    flex-direction: column;

    line-height: 1.1;

    min-width: 0;
}


.brand-text strong {
    font-size: 16px;
    font-weight: 800;

    white-space: nowrap;
}


.brand-text span {
    font-size: 12px;

    color: var(--muted);

    margin-top: 3px;

    white-space: nowrap;
}


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

.desktop-nav {
    display: flex;
    align-items: center;

    gap: 5px;
}


.desktop-nav a {
    position: relative;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 42px;

    padding: 8px 13px;

    border-radius: 10px;

    text-decoration: none;

    color: var(--text);

    font-size: 14px;
    font-weight: 650;

    transition:
        color 0.2s ease,
        background 0.2s ease,
        transform 0.2s ease;
}


.desktop-nav a:hover {
    color: var(--primary);

    background: rgba(109, 63, 176, 0.09);
}


.desktop-nav a:active {
    transform: scale(0.97);
}


/* =========================================================
   THEME TOGGLE
========================================================= */

.theme-toggle {
    width: 42px;
    height: 42px;

    margin-left: 5px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    border: 1px solid var(--border);

    border-radius: 12px;

    background: var(--card);

    color: var(--text);

    font-size: 18px;

    box-shadow: none;

    transition:
        transform 0.2s ease,
        background 0.2s ease;
}


.theme-toggle:hover {
    transform: translateY(-2px);

    background:
        rgba(109, 63, 176, 0.09);
}


/* =========================================================
   GLOBAL BUTTONS
========================================================= */

.primary-btn,
.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 46px;

    padding: 12px 20px;

    border: 0;

    border-radius: 13px;

    background: var(--primary);

    color: #ffffff;

    text-decoration: none;

    font-weight: 750;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        opacity 0.2s ease,
        box-shadow 0.2s ease;
}


.primary-btn:hover,
.primary-button:hover {
    transform: translateY(-2px);

    opacity: 0.94;

    box-shadow:
        0 8px 20px rgba(109, 63, 176, 0.2);
}


.secondary-btn,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 46px;

    padding: 12px 20px;

    border-radius: 13px;

    background:
        rgba(109, 63, 176, 0.09);

    border: 1px solid
        rgba(109, 63, 176, 0.2);

    color: var(--primary);

    text-decoration: none;

    font-weight: 750;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        background 0.2s ease;
}


.secondary-btn:hover,
.secondary-button:hover {
    transform: translateY(-2px);

    background:
        rgba(109, 63, 176, 0.14);
}


/* =========================================================
   COMMON CARD
========================================================= */

.card {
    background: var(--card);

    border: 1px solid var(--border);

    border-radius: var(--radius);

    box-shadow: var(--shadow);
}


/* =========================================================
   COMMON SECTION
========================================================= */

.section {
    padding: 55px 0;
}


.section-title {
    text-align: center;

    max-width: 760px;

    margin: 0 auto 30px;
}


.section-title h2 {
    margin: 0 0 10px;

    font-size: clamp(27px, 4vw, 36px);

    line-height: 1.15;
}


.section-title p {
    margin: 0;

    color: var(--muted);

    line-height: 1.7;
}


/* =========================================================
   FORMS
========================================================= */

input,
textarea,
select {
    width: 100%;

    background: var(--card);

    color: var(--text);

    border: 1px solid var(--border);

    border-radius: 12px;

    padding: 12px 14px;

    outline: none;

    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}


input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);

    box-shadow:
        0 0 0 3px rgba(109, 63, 176, 0.12);
}


label {
    display: block;

    color: var(--text);

    font-size: 14px;

    font-weight: 650;

    margin-bottom: 7px;
}


/* =========================================================
   TABLES
========================================================= */

table {
    width: 100%;

    border-collapse: collapse;

    background: var(--card);

    color: var(--text);
}


th,
td {
    padding: 12px 14px;

    border-bottom: 1px solid var(--border);

    text-align: left;
}


/* =========================================================
   FOOTER
========================================================= */

.site-footer {
    margin-top: 70px;

    background: var(--card);

    border-top: 1px solid var(--border);

    padding: 45px 0 25px;
}


.footer-inner {
    display: flex;

    align-items: flex-start;

    justify-content: space-between;

    gap: 35px;
}


.footer-inner > div:first-child {
    max-width: 500px;
}


.footer-inner strong {
    display: block;

    color: var(--text);

    font-size: 16px;

    margin-bottom: 8px;
}


.footer-inner p {
    margin: 0;

    color: var(--muted);

    line-height: 1.7;

    font-size: 14px;
}


.footer-links {
    display: flex;

    flex-wrap: wrap;

    justify-content: flex-end;

    gap: 10px 18px;
}


.footer-links a {
    color: var(--muted);

    text-decoration: none;

    font-size: 13px;

    transition: color 0.2s ease;
}


.footer-links a:hover {
    color: var(--primary);
}


.footer-bottom {
    margin-top: 30px;

    padding-top: 20px;

    border-top: 1px solid var(--border);

    text-align: center;

    color: var(--muted);

    font-size: 12px;
}


/* =========================================================
   MOBILE BOTTOM NAVIGATION
========================================================= */

.mobile-bottom-nav {
    display: none;
}


/* =========================================================
   BADGES
========================================================= */

.badge {
    display: inline-flex;

    align-items: center;

    padding: 5px 9px;

    border-radius: 999px;

    font-size: 11px;

    font-weight: 750;

    background:
        rgba(109, 63, 176, 0.1);

    color: var(--primary);
}


/* =========================================================
   ALERTS
========================================================= */

.alert {
    padding: 15px 17px;

    border-radius: 14px;

    line-height: 1.6;

    font-size: 14px;
}


.alert-purple {
    background:
        rgba(109, 63, 176, 0.1);

    border: 1px solid
        rgba(109, 63, 176, 0.18);
}


.alert-green {
    background:
        rgba(22, 166, 106, 0.1);

    border: 1px solid
        rgba(22, 166, 106, 0.18);
}


.alert-orange {
    background:
        rgba(242, 140, 40, 0.1);

    border: 1px solid
        rgba(242, 140, 40, 0.18);
}


/* =========================================================
   GLOBAL DARK MODE ADJUSTMENTS
========================================================= */

body.dark .site-header {
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.18);
}


body.dark .guides-hero,
body.dark .cooking-hero,
body.dark .how-hero {
    box-shadow:
        0 18px 45px rgba(0, 0, 0, 0.25);
}


body.dark .theme-toggle {
    background: #241f29;
}


body.dark .secondary-btn,
body.dark .secondary-button {
    background:
        rgba(139, 90, 199, 0.13);

    border-color:
        rgba(139, 90, 199, 0.25);
}


body.dark .cg-panel.good {
    background:
        rgba(22, 166, 106, 0.09);
}


body.dark .cg-panel.avoid {
    background:
        rgba(228, 71, 123, 0.09);
}


/* =========================================================
   LINKS
========================================================= */

main a {
    color: var(--primary);
}


main a:hover {
    color: var(--primary-dark);
}


/* =========================================================
   SELECTION
========================================================= */

::selection {
    background: rgba(109, 63, 176, 0.25);

    color: var(--text);
}


/* =========================================================
   SCROLLBAR
========================================================= */

::-webkit-scrollbar {
    width: 9px;
}


::-webkit-scrollbar-track {
    background: var(--bg);
}


::-webkit-scrollbar-thumb {
    background: rgba(109, 63, 176, 0.45);

    border-radius: 20px;
}


::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 850px) {

    .container {
        width: min(100% - 26px, 720px);
    }


    .header-inner {
        min-height: 70px;
    }


    .desktop-nav a {
        padding-left: 8px;
        padding-right: 8px;
    }


    .brand-text strong {
        font-size: 15px;
    }


    .footer-inner {
        flex-direction: column;
    }


    .footer-links {
        justify-content: flex-start;
    }

}


@media (max-width: 680px) {

    .site-header {
        position: relative;
    }


    .header-inner {
        min-height: 68px;
    }


    .brand-logo {
        width: 46px;
        height: 46px;

        flex-basis: 46px;

        border-radius: 12px;
    }


    .brand-text strong {
        font-size: 14px;
    }


    .brand-text span {
        font-size: 11px;
    }


    .desktop-nav {
        display: none;
    }


    body {
        padding-bottom: 76px;
    }


    .mobile-bottom-nav {
        position: fixed;

        display: grid;

        grid-template-columns:
            repeat(5, 1fr);

        left: 10px;
        right: 10px;
        bottom: 10px;

        z-index: 2000;

        background:
            rgba(255, 255, 255, 0.96);

        border: 1px solid var(--border);

        border-radius: 20px;

        box-shadow:
            0 12px 35px rgba(0, 0, 0, 0.16);

        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);

        padding: 7px 5px;
    }


    body.dark .mobile-bottom-nav {
        background:
            rgba(29, 25, 33, 0.97);
    }


    .mobile-bottom-nav a {
        min-height: 58px;

        display: flex;

        flex-direction: column;

        align-items: center;

        justify-content: center;

        gap: 3px;

        text-decoration: none;

        color: var(--muted);

        border-radius: 14px;

        transition:
            background 0.2s ease,
            color 0.2s ease;
    }


    .mobile-bottom-nav a:hover,
    .mobile-bottom-nav a:active {
        color: var(--primary);

        background:
            rgba(109, 63, 176, 0.09);
    }


    .mobile-bottom-nav span {
        font-size: 19px;

        line-height: 1;
    }


    .mobile-bottom-nav small {
        font-size: 10px;

        font-weight: 700;
    }


    .site-footer {
        margin-top: 50px;

        padding-bottom: 100px;
    }


    .footer-links {
        flex-direction: column;

        gap: 10px;
    }

}


@media (max-width: 400px) {

    .container {
        width: calc(100% - 20px);
    }


    .brand-text strong {
        font-size: 13px;
    }


    .mobile-bottom-nav {
        left: 6px;
        right: 6px;
        bottom: 6px;
    }


    .mobile-bottom-nav small {
        font-size: 9px;
    }

}