@charset "UTF-8";

/* ========================================
   DESIGN SYSTEM GLOBAL
   ======================================== */

:root {
  /* Cores - Paleta Principal */
  --color-primary: #ff8c00;
  --color-primary-dark: #e67e00;
  --color-secondary: #ff6b35;

  /* Cores - Neutras */
  --color-bg-light: #ffffff;
  --color-bg-light-secondary: #f5f5f5;
  --color-bg-dark: #1a1a1a;
  --color-bg-dark-secondary: #2d2d2d;

  --color-text-dark: #1a1a1a;
  --color-text-light: #ffffff;
  --color-text-muted: #666666;
  --color-text-light-muted: #b0b0b0;

  --color-border: #e0e0e0;
  --color-border-dark: #333333;

  /* Status */
  --color-success: #33cc33;
  --color-warning: #ffaa00;
  --color-error: #ff3333;

  /* Tipografia */
  --font-primary: "Poppins", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-secondary: "Roboto", Arial, sans-serif;
  --font-mono: "Courier New", monospace;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Espaçamento */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 15px 30px rgba(0, 0, 0, 0.25);
  --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.5);

  /* Breakpoints */
  --breakpoint-xs: 320px;
  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* Transições */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

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

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  overflow-x: hidden;
  background-color: #1a1a1a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */

.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  max-width: 1200px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* ========================================
   INPUTS & FORMS
   ======================================== */

input,
textarea,
select {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-lg);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

input::placeholder {
  color: var(--color-text-muted);
}

input:invalid {
  border-color: var(--color-error);
}

input:valid {
  border-color: var(--color-success);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--color-primary);
  color: var(--color-text-light);
  width: 100%;
  text-decoration: none;
}

.btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--color-bg-light-secondary);
  color: var(--color-text-dark);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border);
}

.btn-success {
  background-color: var(--color-success);
}

.btn-success:hover {
  background-color: #2ab82a;
}

.btn-error {
  background-color: var(--color-error);
}

.btn-error:hover {
  background-color: #cc0000;
}

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

.card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-dark {
  background: var(--color-bg-dark-secondary);
  border-color: var(--color-border-dark);
  color: var(--color-text-light);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-lg);
}

small {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-text-muted);
}

.m-0 {
  margin: 0;
}
.mt-sm {
  margin-top: var(--spacing-sm);
}
.mt-md {
  margin-top: var(--spacing-md);
}
.mt-lg {
  margin-top: var(--spacing-lg);
}
.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}
.mb-md {
  margin-bottom: var(--spacing-md);
}
.mb-lg {
  margin-bottom: var(--spacing-lg);
}
.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.p-sm {
  padding: var(--spacing-sm);
}
.p-md {
  padding: var(--spacing-md);
}
.p-lg {
  padding: var(--spacing-lg);
}
.p-xl {
  padding: var(--spacing-xl);
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.gap-sm {
  gap: var(--spacing-sm);
}
.gap-md {
  gap: var(--spacing-md);
}
.gap-lg {
  gap: var(--spacing-lg);
}

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* ========================================
   DARK MODE SUPPORT
   ======================================== */

@media (prefers-color-scheme: dark) {
  body:not(.light-mode) {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
  }
}

/* ========================================
   CALCULADORA IMC - STYLES
   ======================================== */

.imc-container {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

.imc-header {
  text-align: center;
  color: #ff8c00;
  margin-bottom: var(--spacing-3xl);
}

.imc-header h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.imc-header p {
  font-size: 1.2rem;
  color: #cccccc;
  margin-bottom: 0;
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.imc-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.form-card,
.result-card {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
}

.form-card h2,
.result-card h2 {
  color: #1a1a1a;
  margin-bottom: var(--spacing-xl);
  font-size: 1.5rem;
}

/* ========================================
   FORM STYLES
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-xl);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-md);
  color: #1a1a1a;
  font-weight: var(--font-weight-semibold);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-lg);
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: border-color var(--transition-base);
}

.form-group input:focus {
  outline: none;
  border-color: #ff8c00;
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.form-group input::placeholder {
  color: #999;
}

.form-card .btn {
  margin-top: var(--spacing-md);
}

/* ========================================
   RESULT CARD
   ======================================== */

.result-box {
  background-color: #ff8c00;
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  color: white;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.result-value {
  font-size: 3.5rem;
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.result-info {
  margin-top: var(--spacing-xl);
}

.result-category {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
}

.result-description {
  font-size: 1rem;
  opacity: 0.95;
  margin: 0;
}

/* ========================================
   CATEGORY COLORS
   ======================================== */

.category-underweight {
  background-color: #2d2d2d;
}

.category-normal {
  background-color: #ff8c00;
}

.category-overweight {
  background-color: #ff9900;
}

.category-obesity1 {
  background-color: #ff7700;
}

.category-obesity2 {
  background-color: #ff6600;
}

.category-obesity3 {
  background-color: #ff5500;
}

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

.imc-footer {
  text-align: center;
  color: #cccccc;
  font-size: 0.9rem;
  padding-top: var(--spacing-lg);
  border-top: 1px solid #333333;
}

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

@media (max-width: 1024px) {
  .imc-main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .imc-header h1 {
    font-size: 2rem;
  }

  .imc-header p {
    font-size: 1rem;
  }

  .form-card,
  .result-card {
    padding: var(--spacing-xl);
  }

  .result-value {
    font-size: 2.5rem;
  }

  .result-box {
    padding: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  body {
    padding: var(--spacing-md);
  }

  .imc-header {
    margin-bottom: var(--spacing-xl);
  }

  .imc-header h1 {
    font-size: 1.5rem;
  }

  .imc-header p {
    font-size: 0.9rem;
  }

  .imc-main {
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }

  .form-card,
  .result-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
  }

  .form-group {
    margin-bottom: var(--spacing-md);
  }

  .result-value {
    font-size: 2rem;
  }

  .result-category {
    font-size: 1.2rem;
  }

  .result-description {
    font-size: 0.9rem;
  }

  .imc-footer {
    font-size: 0.8rem;
  }
}