/* styles.css */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #229ED9;
  --color-primary-hover: #1a8ec9;
  --color-text: #000000;
  --color-text-muted: #707579;
  --color-dark: #229ED9;
  --color-bg: #f4f4f5;
  --color-surface: #ffffff;
  --color-border: #e4e8eb;
  --color-muted: #707579;
  --color-accent-light: #e3f2fd;
  --color-link: #229ED9;
  --color-overlay: rgba(34, 158, 217, 0.2);
  --shadow-primary: 0 2px 8px rgba(34, 158, 217, 0.2);
  --shadow-primary-hover: 0 4px 12px rgba(34, 158, 217, 0.3);
  --shadow-accent: 0 2px 10px rgba(34, 158, 217, 0.15);
  --focus-ring: 0 0 0 3px rgba(34, 158, 217, 0.25);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --h2-style: border-left;
  --list-marker: "✈";
  --font-heading: inherit;
  --font-body: inherit;
}

body {
  font-family: var(--font-body), system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1.5rem 1.2rem;
}

/* Header */
header {
  background: #229ED9;
  color: white;
  border-bottom: none;
}

/* Header layout */
.header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

header p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
}

/* Main */
main {
  background: var(--color-surface);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

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

/* Typography */
h1, h2, h3 {
  font-family: var(--font-heading), inherit;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  border-left: 6px solid var(--color-primary);
  padding-left: 1rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h3:before {
  content: "▍";
  color: var(--color-primary);
  font-weight: bold;
  font-size: 1.8rem;
  line-height: 1;
}

/* Buttons */
.button {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-text);
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-primary);
  transition: 0.2s;
}

.button:hover {
  background-color: var(--color-primary-hover);
  color: white;
  box-shadow: var(--shadow-primary-hover);
}

button.button {
  cursor: pointer;
  touch-action: manipulation;
}

/* Главное действие на странице */
.button--primary {
  color: #fff !important;
  font-size: 1.25rem;
  padding: 1rem 2.5rem;
  box-shadow: 0 4px 14px rgba(34, 158, 217, 0.4);
  border-color: var(--color-primary);
}

.button--primary:hover {
  color: #fff !important;
  box-shadow: 0 6px 20px rgba(34, 158, 217, 0.45);
  transform: translateY(-1px);
}

.button-secondary {
  background-color: var(--color-muted);
  color: var(--color-bg);
  border: 2px solid var(--color-muted);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.15);
}

.button-secondary:hover {
  background-color: var(--color-primary-hover);
  color: white;
  border-color: var(--color-primary-hover);
  box-shadow: var(--shadow-primary-hover);
}

/* Lists */
ul {
  list-style-type: none;
  margin: 1rem 0;
}

li {
  margin-bottom: 0.7rem;
  padding-left: 1.8rem;
  position: relative;
}

li:before {
  content: var(--list-marker);
  color: var(--color-primary);
  font-weight: bold;
  font-size: 1.5rem;
  position: absolute;
  left: 0.2rem;
  top: -0.3rem;
}

/* Links */
a {
  color: var(--color-link);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dotted var(--color-border);
}

a:hover {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

/* Form elements */
input[type="radio"] {
  accent-color: var(--color-primary);
  width: 1.1rem;
  height: 1.1rem;
  margin-right: 0.6rem;
}

textarea {
  width: 100%;
  padding: 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  resize: vertical;
  margin-top: 0.5rem;
}

textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.questionary-form select,
.role-form .degree-row select {
  padding: 0.5rem 2rem 0.5rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.questionary-form select { min-width: 120px; }
.role-form .degree-row select { min-width: 100px; }

.questionary-form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.question-specify-block label {
  display: block;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.question-specify-block textarea {
  margin-top: 0;
}

.search-block label {
  display: block;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.search-block input[type="search"] {
  width: 100%;
  padding: 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.search-block input[type="search"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.questionary-form {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.questionary-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.questionary-row label {
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.95rem;
}

.radio-label {
  display: block;
  cursor: pointer;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

/* Footer */
footer {
  background: #e4e8eb;
  border-top: 1px solid #e4e8eb;
  color: var(--color-text-muted);
  text-align: center;
  font-size: 0.95rem;
}

footer p {
  padding: 1.5rem 0;
}

/* Hero & sections */
.hero-sub {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin: 1.5rem 0 2rem 0;
  background: var(--color-accent-light);
  padding: 1.5rem 2rem;
  border-radius: var(--radius-md);
  border-left: 5px solid var(--color-primary);
}

.hero-sub ul { margin: 0.2rem 0 0 0; }
.hero-sub li { font-size: 1.1rem; margin-bottom: 0.8rem; }
.hero-sub li:last-child { margin-bottom: 0; }
.hero-sub li:before {
  content: "◆";
  color: var(--color-primary);
  font-size: 1.3rem;
  top: -0.1rem;
}

.problem-summary {
  background: #fee2e2;
  padding: 0.8rem 1.2rem;
  border-radius: 40px;
  font-weight: 500;
}

/* Блок с темой и кнопкой «Разобрать» — визуально отделён от секций ниже */
.topic-cta-block {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.topic-cta-block .button--primary {
  margin-top: 0.25rem;
  touch-action: manipulation;
}

/* Two-column header */
.two-col-header {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.title-col {
  flex: 2;
  min-width: 300px;
}

.title-col h2 {
  margin-bottom: 0;
  border-left: 6px solid var(--color-primary);
  padding-left: 1rem;
}

.assessment-col {
  flex: 1;
  min-width: 260px;
  background: var(--color-bg);
  padding: 1.2rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.02);
  align-self: center;
}

.assessment-col h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--color-text);
}

.assessment-col h3:before { display: none; }

.assessment-col form {
  background: transparent;
  padding: 0;
  margin: 0;
}

.assessment-col form label { font-size: 1rem; }

/* Popup */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
  pointer-events: none;
}

.popup-overlay.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.popup-overlay.has-secondary { justify-content: center; }

.popup-modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  max-width: 640px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
  border: 2px solid var(--color-border);
  position: relative;
}

.popup-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: var(--color-bg);
  color: var(--color-muted);
  font-size: 1.5rem;
  line-height: 1;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  touch-action: manipulation;
}

.popup-close:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.popup-title { margin-bottom: 1.5rem; padding-right: 2rem; }

.popup-class-intro {
  margin: -0.5rem 0 1.25rem;
  padding-right: 2rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.popup-buttons { display: flex; flex-direction: column; gap: 1rem; }

.popup-class-other {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}

.popup-class-other-hint {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  min-width: 0;
  overflow-wrap: break-word;
}

.popup-option {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  width: 100%;
  min-height: 5rem;
  padding: 1.5rem 1.75rem;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 500;
  text-align: left;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.4;
  touch-action: manipulation;
}

.popup-option-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.popup-option-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.popup-option-text {
  flex: 1;
  min-width: 0;
}

.popup-option:hover {
  background: var(--color-accent-light);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-accent);
}

.popup-option:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.popup-secondary {
  position: fixed;
  opacity: 0;
  visibility: hidden;
  transition: transform 0.3s ease, opacity 0.3s, visibility 0.3s;
  z-index: 1002;
}

.popup-overlay.has-secondary .popup-secondary.is-open {
  opacity: 1;
  visibility: visible;
}

.popup-overlay.has-secondary .popup-step-1 { z-index: 1001; }

.popup-secondary .popup-secondary-content {
  margin-bottom: 1.5rem;
  min-height: 4rem;
}

.popup-secondary .popup-cta { display: block; width: 100%; margin-top: 0.5rem; }

.popup-vk-register {
  position: fixed;
  opacity: 0;
  visibility: hidden;
  z-index: 1003;
  transition: opacity 0.25s, visibility 0.25s;
}

.popup-vk-register.is-open {
  opacity: 1;
  visibility: visible;
}

.popup-vk-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: stretch;
  height: 100%;
  justify-content: center;
}

.popup-vk-text {
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.popup-vk-subscribe-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  min-height: 3.5rem;
}

.popup-vk-subscribe-btn-icon {
  flex-shrink: 0;
}

.popup-vk-close { display: block; width: 100%; }

@media (max-width: 700px) {
  .two-col-header { flex-direction: column; gap: 1.5rem; }
  .assessment-col { width: 100%; }
  .header-row { flex-direction: column; align-items: flex-start; }

}

/* Popups: full-screen on mobile only (phones, not tablets) */
@media (max-width: 480px) {
  .popup-overlay {
    align-items: stretch;
    justify-content: stretch;
    padding: 0;
  }

  .popup-modal {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: none !important;
    border-radius: 0;
    padding: 1.5rem 1.25rem;
  }

  .popup-secondary,
  .popup-vk-register {
    width: 100% !important;
    height: 100% !important;
    top: 0 !important;
    left: 0 !important;
    border-radius: 0;
  }

  .popup-secondary.is-open {
    transform: none !important;
  }
}