/*
Theme Name: Celsius to Fahrenheit
Theme URI: https://celsiustofahrenheit.live
Author: Celsius to Fahrenheit
Description: Lightweight WordPress theme for a Celsius to Fahrenheit converter. Dark design with temperature accents. Elementor compatible.
Version: 9.1.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: celsius-to-fahrenheit
*/

/* ── VARIABLES ── */
:root {
    --bg-deep:          #0a0e1a;
    --bg-card:          #111827;
    --bg-input:         #1a2234;
    --bg-hover:         #1e293b;
    --accent-hot:       #ff5f3a;
    --accent-cold:      #3ab8ff;
    --accent-glow-hot:  rgba(255,95,58,0.15);
    --accent-glow-cold: rgba(58,184,255,0.15);
    --gradient-bar:     linear-gradient(90deg,var(--accent-cold),var(--accent-hot));
    --text-primary:     #f1f5f9;
    --text-secondary:   #8892a8;
    --text-muted:       #4b5574;
    --border:           #1e293b;
    --border-hover:     #2a3550;
    --radius:           16px;
    --radius-sm:        12px;
    --shadow-card:      0 4px 24px rgba(0,0,0,0.2);
    --font-body:        'DM Sans',-apple-system,BlinkMacSystemFont,sans-serif;
    --font-mono:        'Space Mono',ui-monospace,monospace;
    --max-width:        880px;
    --max-width-wide:   1080px;
}

/* ── FONT DISPLAY SWAP (prevents invisible text during font load) ── */
@font-face { font-family: 'DM Sans';    font-display: swap; }
@font-face { font-family: 'Space Mono'; font-display: swap; }

/* ── RESET ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-body);background:var(--bg-deep);color:var(--text-primary);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
a{color:var(--accent-cold);text-decoration:none;transition:color .25s;}
a:hover{color:var(--accent-hot);}
img{max-width:100%;height:auto;display:block;}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.5px;font-weight:700;}

/* ── SKIP TO CONTENT (accessibility) ── */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;}
.skip-link:focus{position:fixed;top:16px;left:16px;width:auto;height:auto;padding:12px 20px;background:var(--accent-cold);color:#fff;border-radius:8px;z-index:9999;font-weight:600;font-size:.9rem;}

/* ── BG ORBS ── */
.bg-orbs{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden;}
.bg-orbs .orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:.3;animation:orbFloat 18s ease-in-out infinite alternate;}
.bg-orbs .orb-hot{width:500px;height:500px;background:var(--accent-hot);top:-10%;right:-8%;}
.bg-orbs .orb-cold{width:450px;height:450px;background:var(--accent-cold);bottom:-12%;left:-6%;animation-delay:-9s;}
@keyframes orbFloat{0%{transform:translate(0,0) scale(1);}100%{transform:translate(40px,-30px) scale(1.12);}}

/* ── LAYOUT ── */
.site-wrapper{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;}
.main-content{flex:1;}

/* ── HEADER ── */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,14,26,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);}
.header-inner{max-width:var(--max-width-wide);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:68px;}
.site-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text-primary);letter-spacing:-.3px;}
.site-logo .logo-icon{width:36px;height:36px;background:var(--gradient-bar);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;color:#fff;}
.site-logo .logo-icon-svg{width:auto;height:36px;flex-shrink:0;}
.site-logo:hover{color:var(--text-primary);}
.main-nav ul{list-style:none;display:flex;gap:8px;}
.main-nav a{display:block;padding:8px 18px;border-radius:8px;font-size:.9rem;font-weight:500;color:var(--text-secondary);transition:all .25s;}
.main-nav a:hover,.main-nav .current-menu-item a,.main-nav .current_page_item a{color:var(--text-primary);background:var(--bg-hover);}
.menu-toggle{display:none;background:none;border:2px solid var(--border);border-radius:8px;padding:8px;cursor:pointer;color:var(--text-primary);}
.menu-toggle svg{width:22px;height:22px;stroke:currentColor;}
@media(max-width:720px){
    .menu-toggle{display:flex;}
    .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);padding:16px 24px;}
    .main-nav.active{display:block;}
    .main-nav ul{flex-direction:column;gap:4px;}
    .main-nav a{padding:12px 16px;border-radius:10px;}
}

/* ── HERO ── */
.hero{text-align:center;padding:72px 0 40px;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:100px;border:1px solid var(--border);background:var(--bg-card);font-size:13px;color:var(--text-secondary);letter-spacing:.4px;margin-bottom:28px;}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 8px #34d399aa;}
.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);letter-spacing:-1.2px;margin-bottom:18px;}
.hero h1 .cold{color:var(--accent-cold);}
.hero h1 .hot{color:var(--accent-hot);}
.hero p{font-size:1.1rem;color:var(--text-secondary);max-width:520px;margin:0 auto;line-height:1.65;}

/* ── CONVERTER ── */
.converter-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:48px 40px;margin-bottom:48px;position:relative;overflow:hidden;box-shadow:var(--shadow-card);}
.converter-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-bar);}
.converter-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:end;}
.input-group label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:12px;}
.input-wrap{position:relative;}
.input-wrap input{width:100%;background:var(--bg-input);border:2px solid var(--border);border-radius:var(--radius-sm);padding:18px 60px 18px 20px;font-family:var(--font-mono);font-size:1.6rem;font-weight:700;color:var(--text-primary);outline:none;transition:border-color .25s,box-shadow .25s;}
.input-wrap input:focus{border-color:var(--accent-cold);box-shadow:0 0 0 4px var(--accent-glow-cold);}
.input-wrap input.hot-focus:focus{border-color:var(--accent-hot);box-shadow:0 0 0 4px var(--accent-glow-hot);}
.input-wrap .unit{position:absolute;right:18px;top:50%;transform:translateY(-50%);font-family:var(--font-mono);font-size:1.2rem;font-weight:700;color:var(--text-muted);}
.swap-btn{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;border:2px solid var(--border);background:var(--bg-input);cursor:pointer;transition:all .3s;margin-bottom:4px;}
.swap-btn:hover{border-color:var(--accent-hot);background:var(--accent-glow-hot);transform:rotate(180deg);}
.swap-btn svg{width:22px;height:22px;stroke:var(--text-secondary);}

/* ── RESULT BAR ── */
.result-bar{margin-top:28px;padding:18px 24px;background:linear-gradient(135deg,var(--accent-glow-cold),var(--accent-glow-hot));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--font-mono);font-size:1.15rem;font-weight:700;letter-spacing:.3px;opacity:0;transform:translateY(8px);transition:all .4s ease;}
.result-bar.visible{opacity:1;transform:translateY(0);}
.result-bar .eq{color:var(--text-muted);}

/* ── COPY BUTTON ── */
.copy-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:rgba(255,255,255,.05);cursor:pointer;transition:all .25s;flex-shrink:0;}
.copy-btn svg{width:16px;height:16px;stroke:var(--text-secondary);transition:stroke .25s;}
.copy-btn:hover{border-color:var(--accent-cold);background:var(--accent-glow-cold);}
.copy-btn:hover svg{stroke:var(--accent-cold);}
.copy-btn.copied{border-color:#34d399;background:rgba(52,211,153,.12);}
.copy-btn.copied svg{stroke:#34d399;}

@media(max-width:640px){
    .converter-card{padding:32px 20px;}
    .converter-grid{grid-template-columns:1fr;gap:16px;}
    .swap-btn{margin:0 auto;transform:rotate(90deg);}
    .swap-btn:hover{transform:rotate(270deg);}
    .input-wrap input{font-size:1.3rem;padding:16px 55px 16px 16px;}
    .result-bar{font-size:1rem;flex-wrap:wrap;}
}

/* ── FORMULAS ── */
.formula-section{margin-bottom:48px;}
.section-title{font-size:1.4rem;margin-bottom:8px;}
.section-subtitle{color:var(--text-secondary);margin-bottom:28px;line-height:1.6;}
.formula-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.formula-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;transition:border-color .3s;box-shadow:var(--shadow-card);}
.formula-card:first-child:hover{border-color:var(--accent-cold);}
.formula-card:last-child:hover{border-color:var(--accent-hot);}
.formula-card .direction{font-size:13px;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.4px;font-weight:600;margin-bottom:16px;}
.formula-card .formula{font-family:var(--font-mono);font-size:1.25rem;font-weight:700;}
.formula-card:first-child .formula .symbol{color:var(--accent-cold);}
.formula-card:last-child .formula .symbol{color:var(--accent-hot);}
@media(max-width:640px){.formula-cards{grid-template-columns:1fr;}}

/* ── REFERENCE TABLE ── */
.quick-ref{margin-bottom:48px;}
.ref-table{width:100%;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;border-collapse:separate;border-spacing:0;box-shadow:var(--shadow-card);}
.ref-table thead th{background:var(--bg-input);padding:16px 24px;text-align:left;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-muted);border-bottom:1px solid var(--border);}
.ref-table tbody td{padding:14px 24px;font-family:var(--font-mono);font-size:.95rem;border-bottom:1px solid var(--border);color:var(--text-secondary);}
.ref-table tbody tr:last-child td{border-bottom:none;}
.ref-table tbody tr:hover{background:var(--bg-input);}
.ref-table tbody td:first-child{color:var(--accent-cold);font-weight:700;}
.ref-table tbody td:nth-child(2){color:var(--accent-hot);font-weight:700;}

/* ── FAQ ── */
.faq-section{margin-bottom:64px;}
.faq-section-inner{margin-bottom:64px;}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:border-color .3s;}
.faq-item:hover{border-color:var(--border-hover);}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-weight:600;font-size:1rem;user-select:none;gap:16px;background:none;border:none;color:var(--text-primary);width:100%;text-align:left;font-family:var(--font-body);}
.faq-q .chevron{width:20px;height:20px;stroke:var(--text-muted);flex-shrink:0;transition:transform .3s;}
.faq-item.open .faq-q .chevron{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;}
.faq-item.open .faq-a{max-height:400px;}
.faq-a-inner{padding:0 24px 20px;color:var(--text-secondary);line-height:1.7;font-size:.95rem;}

/* ── PAGE HEADER ── */
.page-header{text-align:center;padding:64px 0 40px;}
.page-header h1{font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:-1px;margin-bottom:12px;}
.page-header p{color:var(--text-secondary);font-size:1.05rem;max-width:500px;margin:0 auto;}

/* ── BLOG CARDS ── */
.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-bottom:64px;}
.post-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .3s,transform .3s;box-shadow:var(--shadow-card);}
.post-card:hover{border-color:var(--border-hover);transform:translateY(-4px);}
.post-card-thumb{width:100%;height:200px;object-fit:cover;border-bottom:1px solid var(--border);}
.post-card-thumb-placeholder{width:100%;height:200px;background:linear-gradient(135deg,var(--accent-glow-cold),var(--accent-glow-hot));display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border);}
.post-card-thumb-placeholder svg{width:48px;height:48px;stroke:var(--text-muted);opacity:.5;}
.post-card-body{padding:24px;}
.post-card-meta{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;font-weight:600;}
.post-card-meta .cat{padding:3px 10px;border-radius:100px;background:var(--accent-glow-cold);color:var(--accent-cold);font-size:.75rem;}
.post-card h2{font-size:1.15rem;letter-spacing:-.3px;margin-bottom:10px;line-height:1.4;}
.post-card h2 a{color:var(--text-primary);}
.post-card h2 a:hover{color:var(--accent-cold);}
.post-card-excerpt{color:var(--text-secondary);font-size:.9rem;line-height:1.65;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.read-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:.85rem;font-weight:600;color:var(--accent-cold);}
.read-more:hover{color:var(--accent-hot);}
.read-more svg{width:16px;height:16px;stroke:currentColor;}

/* ── SINGLE POST ── */
.single-post-header{text-align:center;padding:64px 0 32px;max-width:680px;margin:0 auto;}
.single-post-header h1{font-size:clamp(1.6rem,4vw,2.4rem);letter-spacing:-.8px;margin-bottom:16px;line-height:1.3;}
.single-post-meta{display:flex;align-items:center;justify-content:center;gap:16px;color:var(--text-muted);font-size:.85rem;}
.single-post-meta .divider{color:var(--border);}
.single-post-thumb{max-width:680px;margin:0 auto 40px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);}
.single-post-thumb img{width:100%;height:auto;}
.post-content{max-width:680px;margin:0 auto;padding-bottom:64px;}
.post-content p{margin-bottom:1.5em;color:var(--text-secondary);font-size:1.05rem;line-height:1.8;}
.post-content h2{font-size:1.5rem;margin:2em 0 .8em;color:var(--text-primary);}
.post-content h3{font-size:1.2rem;margin:1.8em 0 .6em;color:var(--text-primary);}
.post-content ul,.post-content ol{margin:0 0 1.5em 1.5em;color:var(--text-secondary);}
.post-content li{margin-bottom:.5em;line-height:1.7;}
.post-content blockquote{border-left:3px solid var(--accent-cold);margin:1.5em 0;padding:16px 24px;background:var(--bg-card);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic;}
.post-content code{font-family:var(--font-mono);background:var(--bg-input);padding:2px 8px;border-radius:6px;font-size:.9em;color:var(--accent-hot);}
.post-content pre{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px;overflow-x:auto;margin-bottom:1.5em;}
.post-content pre code{background:none;padding:0;color:var(--text-secondary);}
.post-content a{color:var(--accent-cold);border-bottom:1px solid transparent;}
.post-content a:hover{border-bottom-color:var(--accent-cold);}
.post-content img{border-radius:var(--radius-sm);margin:1.5em 0;}
.post-nav{max-width:680px;margin:0 auto;padding:32px 0 64px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:24px;}
.post-nav a{font-size:.9rem;font-weight:600;color:var(--text-secondary);}
.post-nav a:hover{color:var(--accent-cold);}
.post-nav .label{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:4px;font-weight:600;}

/* ── PAGINATION ── */
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:64px;}
.pagination a,.pagination span{display:flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 14px;border-radius:10px;border:1px solid var(--border);background:var(--bg-card);font-size:.9rem;font-weight:600;color:var(--text-secondary);transition:all .25s;}
.pagination a:hover{border-color:var(--accent-cold);color:var(--text-primary);background:var(--accent-glow-cold);}
.pagination .current{background:var(--accent-cold);border-color:var(--accent-cold);color:#fff;}

/* ── FOOTER ── */
.site-footer{border-top:1px solid var(--border);padding:40px 0;text-align:center;color:var(--text-muted);font-size:.85rem;}
.footer-inner{max-width:var(--max-width-wide);margin:0 auto;padding:0 24px;}
.footer-nav{list-style:none;display:flex;justify-content:center;gap:24px;margin-bottom:16px;}
.footer-nav a{color:var(--text-secondary);font-size:.85rem;}
.footer-nav a:hover{color:var(--text-primary);}

/* ── ELEMENTOR OVERRIDES ── */
.elementor-section{background-color:transparent !important;}
.elementor-widget-heading .elementor-heading-title{color:var(--text-primary);}
.elementor-widget-text-editor{color:var(--text-secondary);}

/* ── ELEMENTOR PAGE WRAPPER ──
   Pages built with free Elementor use .elementor-page-wrap instead of .container.
   This removes the max-width cap and lets Elementor sections control their own widths. */
.elementor-page-wrap{width:100%;overflow-x:hidden;}

/* Allow Elementor full-width sections to bleed to viewport edges */
body.ctf-elementor-page .elementor-section.elementor-section-full_width,
body.ctf-elementor-page .e-con.e-full-width{
    margin-left:0 !important;
    margin-right:0 !important;
    width:100% !important;
    max-width:100% !important;
}

/* Elementor inner container respects the site's max-width variable */
body.ctf-elementor-page .elementor-section .elementor-container,
body.ctf-elementor-page .e-con-inner{
    max-width:var(--max-width-wide);
}

/* Elementor button inherits theme accent color by default */
.elementor-button.elementor-button-link,
.elementor-button{
    background:var(--accent-cold);
    border-radius:10px;
    font-family:var(--font-body);
    font-weight:600;
}
.elementor-button:hover{opacity:.88;}

/* Elementor divider inherits theme border color */
.elementor-divider-separator{border-color:var(--border) !important;}

/* Elementor image box & icon box text */
.elementor-icon-box-description,
.elementor-image-box-description{color:var(--text-secondary);}