/*
Theme Name: IBAN Rechnerr
Theme URI: https://iban-rechnerr.de
Author: IBAN Rechnerr Team
Description: A professional IBAN calculator WordPress theme
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: iban-rechnerr
*/

:root {
  --color-primary: #1a6dbf;
  --color-primary-dark: #0f4e8e;
  --color-secondary: #f5a623;
  --color-accent: #00b9ff;
  --color-bg: #dce8f5;
  --color-card: #ffffff;
  --color-border: #c8d8ec;
  --color-text: #1a2535;
  --color-muted: #5a6a7e;
  --color-success: #28a745;
  --color-error: #dc3545;
  --color-footer: #0f3566;
  --font-heading: 'Source Serif 4', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.2s ease;
  --max-width: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: 1rem; line-height: 1.7; color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.3; color: var(--color-primary-dark); }

/* LAYOUT */
.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1rem; }

/* LANGUAGE BAR */
.lang-bar { background: rgba(0,0,0,0.18); padding: 0.3rem 1rem; display: flex; justify-content: flex-end; gap: 0.4rem; flex-wrap: wrap; }
.lang-bar a { color: rgba(255,255,255,0.82); font-size: 0.8rem; font-weight: 600; padding: 0.1rem 0.3rem; border-radius: 3px; }
.lang-bar a:hover, .lang-bar a.active { color: #fff; background: rgba(255,255,255,0.2); }
.lang-dot { color: var(--color-secondary); }

/* HEADER */
.site-header { background: linear-gradient(135deg, #1a6dbf 0%, #0f4e8e 100%); color: white; box-shadow: var(--shadow-md); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.65rem 1rem; max-width: var(--max-width); margin: 0 auto; gap: 1rem; }
.site-branding { display: flex; align-items: center; gap: 0.65rem; }
.site-logo { width: 58px; height: 58px; background: rgba(255,255,255,0.12); border: 2px solid rgba(255,255,255,0.35); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 0.68rem; text-align: center; color: white; line-height: 1.2; padding: 4px; font-family: var(--font-heading); letter-spacing: 0.02em; }
.site-name { font-family: var(--font-heading); font-size: 1.35rem; font-weight: 800; color: white; display: block; line-height: 1.1; }
.site-desc { font-size: 0.72rem; color: rgba(255,255,255,0.72); display: block; }
.main-nav { display: flex; align-items: center; }
.nav-menu { list-style: none; display: flex; gap: 0.2rem; }
.nav-menu li a { display: flex; flex-direction: column; align-items: center; padding: 0.45rem 0.75rem; color: white; border-radius: var(--radius-sm); font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; gap: 0.2rem; transition: background var(--transition); }
.nav-menu li a:hover, .nav-menu .current-menu-item a { background: rgba(255,255,255,0.18); }
.nav-icon { width: 30px; height: 30px; background: var(--color-secondary); border-radius: 5px; display: flex; align-items: center; justify-content: center; font-size: 0.95rem; }
.menu-toggle { display: none; background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.35); color: white; padding: 0.45rem 0.65rem; border-radius: var(--radius-sm); cursor: pointer; font-size: 1.1rem; line-height: 1; }

/* SUB-NAV */
.sub-nav { background: #f0f6ff; border-bottom: 1px solid var(--color-border); padding: 0.35rem 1rem; }
.sub-nav-inner { max-width: var(--max-width); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 0.15rem; align-items: center; }
.sub-nav a { font-size: 0.83rem; color: var(--color-primary); padding: 0.18rem 0.45rem; border-radius: 3px; transition: background var(--transition); }
.sub-nav a:hover { background: var(--color-border); }
.sub-nav .sep { color: #bbb; padding: 0 0.1rem; }

/* PAGE LAYOUT */
.page-layout { display: grid; grid-template-columns: 215px 1fr; gap: 1.2rem; padding: 1.2rem 1rem; max-width: var(--max-width); margin: 0 auto; }

/* SIDEBAR */
.sidebar { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.15rem; align-self: start; box-shadow: var(--shadow-sm); }
.sidebar h2 { font-size: 1rem; color: var(--color-primary); margin-bottom: 0.7rem; padding-bottom: 0.45rem; border-bottom: 2px solid var(--color-border); }
.sidebar ul { list-style: none; }
.sidebar ul li { padding: 0.28rem 0; font-size: 0.88rem; border-bottom: 1px dotted var(--color-border); }
.sidebar ul li:last-child { border-bottom: none; }
.sidebar ul li a { color: var(--color-primary); }
.sidebar .badge { display: inline-block; background: var(--color-secondary); color: white; font-size: 0.68rem; font-weight: 700; padding: 0.08rem 0.35rem; border-radius: 3px; margin-left: 0.2rem; vertical-align: middle; }
.pro-cta { margin-top: 0.9rem; padding-top: 0.9rem; border-top: 2px solid var(--color-border); font-size: 0.88rem; }
.pro-cta a { font-weight: 700; }

/* CONTENT AREA */
.content-area { display: flex; flex-direction: column; gap: 1.2rem; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.bottom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }

/* CALC CARDS */
.calc-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.calc-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); }
.calc-card h1, .calc-card h2 { font-size: 1.3rem; color: var(--color-primary); margin-bottom: 0.9rem; padding-bottom: 0.45rem; border-bottom: 2px dashed var(--color-border); }

/* FORMS */
.form-group { margin-bottom: 0.9rem; }
.form-group label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 0.3rem; }
.form-control { width: 100%; padding: 0.52rem 0.7rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-family: var(--font-body); font-size: 0.93rem; background: #fafcff; color: var(--color-text); transition: border-color var(--transition), box-shadow var(--transition); }
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(26,109,191,0.14); }
.iban-input { font-family: var(--font-mono); letter-spacing: 0.05em; text-transform: uppercase; }
select.form-control { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%231a6dbf' d='M5 6L0 0h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.65rem center; padding-right: 1.8rem; }
.hint { font-size: 0.8rem; color: var(--color-muted); margin-top: 0.4rem; line-height: 1.45; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem; padding: 0.55rem 1.15rem; border: none; border-radius: var(--radius-sm); font-family: var(--font-body); font-size: 0.92rem; font-weight: 600; cursor: pointer; transition: all var(--transition); text-decoration: none; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: none; }
.btn-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: white; }
.btn-primary:hover { background: linear-gradient(135deg, var(--color-primary-dark), #0a3460); color: white; }
.btn-block { width: 100%; }
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4); border-top-color: white; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* RESULTS */
.result-box { margin-top: 1.1rem; padding: 0.9rem 1.1rem; border-radius: var(--radius); border: 1px solid var(--color-border); background: #f8fbff; display: none; animation: fadeIn 0.3s ease; }
.result-box.show { display: block; }
.result-box.valid-result { border-color: var(--color-success); background: #f0fff4; }
.result-box.error-result { border-color: var(--color-error); background: #fff5f5; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.result-status { display: flex; align-items: center; gap: 0.45rem; font-weight: 700; font-size: 0.98rem; margin-bottom: 0.65rem; }
.result-status.ok { color: var(--color-success); }
.result-status.err { color: var(--color-error); }
.result-iban { background: white; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 0.45rem 0.7rem; font-family: var(--font-mono); font-size: 1rem; letter-spacing: 0.07em; margin-bottom: 0.65rem; word-break: break-all; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.45rem 1.2rem; }
.result-item .lbl { font-size: 0.75rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.result-item .val { font-weight: 600; font-size: 0.88rem; font-family: var(--font-mono); }

/* GUARANTEE */
.guarantee-box { background: linear-gradient(135deg, #fffbeb, #fff3cc); border: 1px solid #f0c040; border-radius: var(--radius); padding: 0.9rem 1.1rem; display: flex; align-items: flex-start; gap: 0.65rem; }
.guarantee-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.guarantee-box h3 { font-size: 0.92rem; color: #7a5800; margin-bottom: 0.2rem; }
.guarantee-box p { font-size: 0.83rem; color: #5a4000; margin: 0; }

/* ARTICLE */
.article-wrap { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 2rem 2.2rem; box-shadow: var(--shadow-sm); }
.article-wrap h1 { font-size: 1.85rem; margin-bottom: 0.5rem; margin-top: 0; }
.article-wrap .article-intro { font-size: 1.05rem; color: var(--color-muted); margin-bottom: 1.5rem; line-height: 1.65; }
.article-wrap h2 { font-size: 1.4rem; color: var(--color-primary); border-bottom: 2px solid var(--color-border); padding-bottom: 0.35rem; margin: 1.6rem 0 0.75rem; }
.article-wrap h3 { font-size: 1.1rem; color: var(--color-primary-dark); margin: 1.2rem 0 0.55rem; }
.article-wrap h4 { font-size: 0.98rem; margin: 1rem 0 0.45rem; }
.article-wrap p { margin-bottom: 0.9rem; }
.article-wrap ul, .article-wrap ol { padding-left: 1.5rem; margin-bottom: 0.9rem; }
.article-wrap li { margin-bottom: 0.3rem; }
.article-wrap table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.4rem; font-size: 0.88rem; }
.article-wrap th { background: var(--color-primary); color: white; padding: 0.55rem 0.9rem; text-align: left; }
.article-wrap td { padding: 0.45rem 0.9rem; border-bottom: 1px solid var(--color-border); }
.article-wrap tr:nth-child(even) td { background: #f5f8fc; }
.article-wrap .infobox { background: #eef6ff; border-left: 4px solid var(--color-primary); padding: 0.9rem 1.1rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 1rem 0; }
.article-wrap .infobox p { margin: 0; font-size: 0.9rem; }

/* FOOTER */
.site-footer { background: var(--color-footer); color: rgba(255,255,255,0.78); text-align: center; padding: 1.4rem 1rem; margin-top: 2rem; }
.footer-links { display: flex; justify-content: center; gap: 1.4rem; margin-bottom: 0.65rem; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.78); font-size: 0.88rem; }
.footer-links a:hover { color: white; }
.footer-copy { font-size: 0.82rem; opacity: 0.65; }