/*
Theme Name: eSIM IoT Manager
Theme URI: https://esimiotmanager.com
Author: esimiotmanager.com
Description: Purpose-built theme for esimiotmanager.com - enterprise eSIM fleet management platform.
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: esimiotmanager
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  --navy-deep:   #070f1c;
  --navy:        #0a1929;
  --navy-mid:    #0f2640;
  --navy-card:   #122c4a;
  --navy-border: #1a3a5c;
  --teal:        #00c8b4;
  --teal-bright: #00e5cf;
  --teal-dim:    #009e8e;
  --white:       #ffffff;
  --grey-light:  #f0f5fa;
  --grey-text:   #7a9bb5;
  --grey-mid:    #4a6680;
  --text:        #d0dde8;
  --text-body:   #a8bece;
  --warning:     #f0a030;

  --font-head: 'Syne', sans-serif;
  --font-body: 'Figtree', sans-serif;

  --radius:    8px;
  --radius-lg: 16px;
  --shadow:    0 4px 24px rgba(0,0,0,0.35);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.25);

  --max-width: 1140px;
  --section-pad: 80px 24px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--teal); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--teal-bright); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  line-height: 1.2;
  color: var(--white);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1.2rem; color: var(--text-body); }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: 1.5rem; margin-bottom: 1.2rem; }
li { color: var(--text-body); margin-bottom: 0.4rem; }

strong { color: var(--white); font-weight: 600; }

hr {
  border: none;
  border-top: 1px solid var(--navy-border);
  margin: 2rem 0;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */

.eim-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eim-section {
  padding: var(--section-pad);
}

.eim-section--dark {
  background: var(--navy-deep);
  background-image: radial-gradient(circle, rgba(26,58,92,0.5) 1px, transparent 1px);
  background-size: 28px 28px;
}

.eim-section--mid {
  background: var(--navy-mid);
}

.eim-section--teal {
  background: linear-gradient(135deg, var(--teal-dim) 0%, var(--teal) 100%);
}

.eim-section--light {
  background: var(--grey-light);
}

.eim-section__label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

.eim-section__title {
  margin-bottom: 16px;
}

.eim-section__sub {
  font-size: 1.1rem;
  color: var(--grey-text);
  max-width: 620px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.eim-section__sub--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eim-text-center { text-align: center; }
.eim-text-center h2, .eim-text-center h3 { text-align: center; }

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

.eim-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 13px 28px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.22s ease;
  text-decoration: none;
}

.eim-btn--primary {
  background: var(--teal);
  color: var(--navy-deep);
  border-color: var(--teal);
}
.eim-btn--primary:hover {
  background: var(--teal-bright);
  border-color: var(--teal-bright);
  color: var(--navy-deep);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,200,180,0.3);
}

.eim-btn--outline {
  background: transparent;
  color: var(--teal);
  border-color: var(--navy-border);
}
.eim-btn--outline:hover {
  border-color: var(--teal);
  color: var(--teal-bright);
  transform: translateY(-1px);
}

.eim-btn--white {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.eim-btn--white:hover {
  background: var(--grey-light);
  color: var(--navy);
  transform: translateY(-1px);
}

.eim-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 15, 28, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--navy-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.site-header__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--teal);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--navy-deep);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.site-header__logo-text {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
}

.site-header__logo-text span {
  display: block;
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--grey-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-header__nav a {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--grey-text);
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.18s;
}

.site-header__nav a:hover,
.site-header__nav .current-menu-item > a {
  color: var(--white);
  background: var(--navy-mid);
}

.site-header__cta {
  flex-shrink: 0;
}

.site-header__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}

.site-header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.2s;
}

.site-header__mobile-nav {
  display: none;
  background: var(--navy-deep);
  border-top: 1px solid var(--navy-border);
  padding: 16px 24px;
}

.site-header__mobile-nav.is-open { display: block; }

.site-header__mobile-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-header__mobile-nav li { border-bottom: 1px solid var(--navy-border); }
.site-header__mobile-nav li:last-child { border-bottom: none; }

.site-header__mobile-nav a {
  display: block;
  padding: 12px 0;
  color: var(--text);
  font-size: 0.95rem;
}

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */

.page-hero {
  background: var(--navy-deep);
  background-image: radial-gradient(circle, rgba(26,58,92,0.6) 1px, transparent 1px);
  background-size: 24px 24px;
  border-bottom: 1px solid var(--navy-border);
  padding: 64px 24px 56px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
}

.page-hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero__label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 16px;
}

.page-hero__sub {
  font-size: 1.05rem;
  color: var(--grey-text);
  max-width: 600px;
}

/* ============================================================
   HOMEPAGE HERO
   ============================================================ */

.eim-hero {
  background: var(--navy-deep);
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0,200,180,0.07) 0%, transparent 50%),
    radial-gradient(circle, rgba(26,58,92,0.5) 1px, transparent 1px);
  background-size: auto, 28px 28px;
  padding: 96px 24px 88px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--navy-border);
}

.eim-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--teal) 40%, var(--teal-bright) 60%, transparent 100%);
}

.eim-hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  max-width: 760px;
}

.eim-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,200,180,0.1);
  border: 1px solid rgba(0,200,180,0.25);
  border-radius: 100px;
  padding: 6px 14px 6px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.eim-hero__badge-dot {
  width: 7px;
  height: 7px;
  background: var(--teal);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.eim-hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.eim-hero h1 em {
  font-style: normal;
  color: var(--teal);
}

.eim-hero__sub {
  font-size: 1.15rem;
  color: var(--grey-text);
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: 0;
}

/* ============================================================
   FEATURE CARDS
   ============================================================ */

.eim-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.eim-card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.eim-card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.eim-card {
  background: var(--navy-card);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.22s ease;
  position: relative;
  overflow: hidden;
}

.eim-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  opacity: 0;
  transition: opacity 0.22s;
}

.eim-card:hover {
  border-color: rgba(0,200,180,0.3);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.eim-card:hover::before { opacity: 1; }

.eim-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.eim-card__title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.eim-card__text {
  font-size: 0.9rem;
  color: var(--grey-text);
  line-height: 1.65;
  margin: 0;
}

/* ============================================================
   HOW IT WORKS / STEPS
   ============================================================ */

.eim-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 48px;
  position: relative;
}

.eim-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.67% + 16px);
  right: calc(16.67% + 16px);
  height: 2px;
  background: linear-gradient(90deg, var(--navy-border), var(--teal), var(--navy-border));
}

.eim-step {
  padding: 0 20px;
  text-align: center;
  position: relative;
}

.eim-step__num {
  width: 56px;
  height: 56px;
  background: var(--navy-card);
  border: 2px solid var(--teal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--teal);
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  background: var(--navy-deep);
}

.eim-step__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.eim-step__text {
  font-size: 0.875rem;
  color: var(--grey-text);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   RESOURCE / REFERENCE BOXES
   ============================================================ */

.eim-resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.eim-resource-box {
  background: var(--navy-card);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s;
  text-decoration: none;
}

.eim-resource-box:hover { border-color: rgba(0,200,180,0.4); }

.eim-resource-box__source {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

.eim-resource-box__title {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
}

.eim-resource-box__desc {
  font-size: 0.82rem;
  color: var(--grey-text);
  margin: 0;
  line-height: 1.5;
}

.eim-resource-box__arrow {
  font-size: 0.8rem;
  color: var(--teal);
  margin-top: auto;
  padding-top: 8px;
}

/* ============================================================
   STAT ROW
   ============================================================ */

.eim-stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--navy-border);
}

.eim-stat__num {
  font-family: var(--font-head);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 6px;
}

.eim-stat__label {
  font-size: 0.85rem;
  color: var(--grey-text);
  margin: 0;
}

/* ============================================================
   CTA STRIP
   ============================================================ */

.eim-cta-strip {
  background: linear-gradient(135deg, rgba(0,200,180,0.12) 0%, rgba(0,200,180,0.04) 100%);
  border: 1px solid rgba(0,200,180,0.2);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin-top: 48px;
}

.eim-cta-strip h2 { margin-bottom: 12px; }
.eim-cta-strip p { color: var(--grey-text); margin-bottom: 0; max-width: 500px; margin: 0 auto 28px; }

/* ============================================================
   INLINE NOTE / CALLOUT
   ============================================================ */

.eim-callout {
  background: rgba(0,200,180,0.08);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 24px 0;
}

.eim-callout p {
  font-size: 0.92rem;
  color: var(--text);
  margin: 0;
}

.eim-callout strong { color: var(--teal); }

/* ============================================================
   TAG LIST
   ============================================================ */

.eim-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}

.eim-tag-list li {
  background: var(--navy-mid);
  border: 1px solid var(--navy-border);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 0.8rem;
  color: var(--grey-text);
  margin: 0;
}

/* ============================================================
   CONTENT AREA (inner pages)
   ============================================================ */

.entry-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.entry-content h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-top: 48px;
  border-top: 1px solid var(--navy-border);
}

.entry-content h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.entry-content h3 {
  font-size: 1.2rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.entry-content p { color: var(--text-body); font-size: 1rem; }

.entry-content a { color: var(--teal); border-bottom: 1px solid rgba(0,200,180,0.3); }
.entry-content a:hover { border-color: var(--teal); }

.entry-content ul li::marker { color: var(--teal); }

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

.site-footer {
  background: var(--navy-deep);
  border-top: 1px solid var(--navy-border);
  padding: 64px 24px 32px;
}

.site-footer__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--navy-border);
}

.site-footer__brand {}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  text-decoration: none;
}

.site-footer__logo-mark {
  width: 32px;
  height: 32px;
  background: var(--teal);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.78rem;
  color: var(--navy-deep);
}

.site-footer__logo-text {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
}

.site-footer__tagline {
  font-size: 0.875rem;
  color: var(--grey-text);
  line-height: 1.6;
  margin-bottom: 20px;
}

.site-footer__col-title {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 16px;
}

.site-footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__links li { margin-bottom: 8px; }

.site-footer__links a {
  font-size: 0.875rem;
  color: var(--grey-text);
  transition: color 0.18s;
}

.site-footer__links a:hover { color: var(--teal); }

.site-footer__bottom {
  max-width: var(--max-width);
  margin: 28px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer__copy {
  font-size: 0.82rem;
  color: var(--grey-mid);
  margin: 0;
}

.site-footer__eco {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-footer__eco a {
  font-size: 0.8rem;
  color: var(--grey-mid);
}

.site-footer__eco a:hover { color: var(--teal); }

/* ============================================================
   404 PAGE
   ============================================================ */

.error-404 {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
}

.error-404__code {
  font-family: var(--font-head);
  font-size: 7rem;
  font-weight: 800;
  color: var(--navy-border);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.04em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .eim-card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .eim-stat-row { grid-template-columns: repeat(2, 1fr); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-pad: 56px 20px; }

  .eim-card-grid,
  .eim-card-grid--2 { grid-template-columns: 1fr; }
  .eim-steps { grid-template-columns: 1fr; gap: 32px; }
  .eim-steps::before { display: none; }
  .eim-step { text-align: left; display: flex; gap: 16px; align-items: flex-start; }
  .eim-step__num { flex-shrink: 0; margin: 0; }
  .eim-resource-grid { grid-template-columns: 1fr; }
  .eim-stat-row { grid-template-columns: repeat(2, 1fr); }
  .eim-cta-strip { padding: 32px 24px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }

  .site-header__nav,
  .site-header__cta { display: none; }
  .site-header__hamburger { display: flex; }

  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .eim-stat-row { grid-template-columns: 1fr 1fr; }
}