/* Style.css - Apple-style Minimalist Design System for T-Shirt E-Commerce Demo */

/* Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Prompt:wght@300;400;500;600&display=swap');

/* Global Variables */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #fafafa;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --border-color: #d2d2d7;
  --accent-color: #000000;
  --accent-hover: #333333;
  --accent-blue: #0071e3;
  --button-bg: #1d1d1f;
  --button-text: #ffffff;
  --input-bg: #ffffff;
  --card-bg: #ffffff;
  --card-border: #e5e5e7;
  
  --font-sans: 'Inter', 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-speed: 0.3s;
  --header-height: 48px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-primary: #161617;
  --bg-secondary: #000000;
  --bg-tertiary: #1d1d1f;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --border-color: #424245;
  --accent-color: #ffffff;
  --accent-hover: #e5e5e7;
  --accent-blue: #2997ff;
  --button-bg: #f5f5f7;
  --button-text: #1d1d1f;
  --input-bg: #1d1d1f;
  --card-bg: #1c1c1e;
  --card-border: #2c2c2e;
}

/* Reset and Core Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-speed);
}

a:hover {
  opacity: 0.8;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header/Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(var(--bg-primary), 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  position: relative;
}

.logo {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
}

.nav-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
}

.nav-center a {
  font-size: 12px;
  color: var(--text-primary);
  opacity: 0.8;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.nav-center a:hover {
  opacity: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.bag-icon-container {
  position: relative;
  display: flex;
  align-items: center;
}

.bag-icon-svg {
  stroke: var(--text-primary);
  opacity: 0.8;
  transition: opacity var(--transition-speed);
}

.bag-icon-container:hover .bag-icon-svg {
  opacity: 1;
}

.bag-count {
  position: absolute;
  top: -6px;
  right: -10px;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  font-size: 9px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 10px;
  line-height: 1;
}

.theme-toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-speed);
  font-family: inherit;
}

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

.btn-primary {
  background-color: var(--button-bg);
  color: var(--button-text);
  border-color: var(--button-bg);
}

.btn-primary:hover {
  opacity: 0.9;
  background-color: var(--button-bg);
}

.btn-link {
  border: none;
  background: none;
  color: var(--accent-blue);
  padding: 0;
  font-size: 13px;
  cursor: pointer;
}

.btn-link:hover {
  text-decoration: underline;
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--input-bg);
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition-speed);
}

.form-control:focus {
  outline: none;
  border-color: var(--text-primary);
}

/* GRID/FLEX UTILITIES */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.col {
  flex: 1;
  padding: 0 12px;
}

/* HOME PAGE - PRODUCT SHOWCASE */
.hero-section {
  position: relative;
  text-align: center;
  padding: 120px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 480px;
  background-color: #000000;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.7) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-section h1 {
  font-size: 48px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.1;
  color: #ffffff;
}

.hero-section p {
  font-size: 21px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 400;
  max-width: 600px;
  text-align: center;
  margin: 0 auto;
}

.showcase-tiers {
  display: flex;
  flex-direction: column;
  gap: 60px;
  margin-bottom: 100px;
}

.tier-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
  padding: 60px 0;
  border-bottom: 1px solid var(--border-color);
}

.tier-section:last-child {
  border-bottom: none;
}

.tier-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tier-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  font-weight: 600;
}

.tier-title {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.tier-tagline {
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 400;
}

.tier-price {
  font-size: 20px;
  font-weight: 500;
  margin-top: 8px;
}

.tier-actions {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.tier-image-container {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
}

.tier-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.tier-section:hover .tier-image-container img {
  transform: scale(1.03);
}

/* PRODUCT CONFIG PAGE */
.config-header {
  border-bottom: 1px solid var(--border-color);
  padding: 24px 0 16px 0;
  margin-bottom: 40px;
}

.config-header-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.config-header-titles h2 {
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.config-header-titles h1 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.price-summary-sticky {
  text-align: right;
}

.price-summary-sticky .price-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.price-summary-sticky .price-val {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.config-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  margin-bottom: 120px;
}

.config-visual {
  position: sticky;
  top: 80px;
  height: fit-content;
  background-color: var(--bg-secondary);
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.config-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.config-options {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.config-section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.config-section-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: -12px;
  margin-bottom: 16px;
}

/* Sizes Pill Layout */
.size-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.option-card-input {
  display: none;
}

.option-card-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 16px 8px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-speed);
  font-size: 13px;
  font-weight: 500;
  background-color: var(--card-bg);
}

.option-card-label:hover {
  border-color: var(--text-primary);
}

.option-card-input:checked + .option-card-label {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px var(--accent-blue);
  background-color: var(--bg-primary);
}

/* Trade-In Options Card Layout */
.tradein-list, .warranty-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tradein-card-label, .warranty-card-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-speed);
  background-color: var(--card-bg);
}

.tradein-card-label:hover, .warranty-card-label:hover {
  border-color: var(--text-primary);
}

.option-card-input:checked + .tradein-card-label,
.option-card-input:checked + .warranty-card-label {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px var(--accent-blue);
}

.option-card-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.option-card-name {
  font-size: 14px;
  font-weight: 600;
}

.option-card-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.option-card-price {
  font-size: 14px;
  font-weight: 500;
}

.option-card-price.discount {
  color: #008000;
  font-weight: 600;
}
[data-theme="dark"] .option-card-price.discount {
  color: #30d158;
}

/* Specs list in config */
.specs-list {
  list-style: none;
  margin-top: 10px;
}

.specs-list li {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.specs-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--border-color);
}

/* Sticky Bottom Bar */
.sticky-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(var(--bg-primary), 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 16px 0;
  z-index: 99;
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

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

.sticky-bottom-info {
  display: flex;
  flex-direction: column;
}

.sticky-bottom-info .title {
  font-size: 14px;
  font-weight: 600;
}

.sticky-bottom-info .summary {
  font-size: 12px;
  color: var(--text-secondary);
}

.sticky-bottom-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.sticky-bottom-price {
  font-size: 20px;
  font-weight: 500;
}

/* BAG PAGE */
.bag-title-section {
  padding: 60px 0 30px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.bag-title-section h1 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.bag-items-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 60px;
}

.bag-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 30px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border-color);
}

.bag-item-image {
  width: 120px;
  height: 120px;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.bag-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bag-item-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bag-item-details h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.bag-item-meta {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.bag-item-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.bag-qty-select {
  font-size: 13px;
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--input-bg);
  color: var(--text-primary);
  font-family: inherit;
}

.remove-btn {
  font-size: 13px;
  color: var(--accent-blue);
  border: none;
  background: none;
  cursor: pointer;
}

.remove-btn:hover {
  text-decoration: underline;
}

.bag-item-price-col {
  text-align: right;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
}

.bag-item-total {
  font-size: 18px;
  font-weight: 500;
}

/* Bag Summary */
.bag-summary-section {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  margin-bottom: 120px;
}

.bag-summary-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background-color: var(--bg-secondary);
  padding: 30px;
  border-radius: 12px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.summary-row.total {
  font-size: 20px;
  font-weight: 600;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  margin-top: 8px;
}

.bag-summary-actions {
  margin-top: 12px;
}

.bag-summary-actions .btn {
  width: 100%;
  padding: 16px;
  font-size: 15px;
}

.empty-bag-message {
  text-align: center;
  padding: 80px 0;
}

.empty-bag-message p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 24px;
}

/* CHECKOUT PAGE */
.checkout-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  margin-top: 40px;
  margin-bottom: 120px;
}

.checkout-section-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.checkout-forms {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.payment-methods-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.payment-method-label {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-speed);
  font-size: 14px;
  font-weight: 500;
  background-color: var(--card-bg);
}

.payment-method-label:hover {
  border-color: var(--text-primary);
}

.option-card-input:checked + .payment-method-label {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px var(--accent-blue);
}

.payment-icon {
  font-size: 18px;
  font-weight: 600;
  opacity: 0.8;
}

.checkout-summary-col {
  position: sticky;
  top: 80px;
  height: fit-content;
}

.order-summary-box {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  background-color: var(--card-bg);
}

.order-summary-items {
  max-height: 240px;
  overflow-y: auto;
  margin-bottom: 20px;
}

.order-summary-item {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.order-summary-item .name {
  color: var(--text-primary);
  font-weight: 500;
}

.order-summary-totals {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

/* SUCCESS PAGE */
.success-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 60vh;
  gap: 24px;
}

.success-container h1 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.success-container p {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 480px;
  margin-bottom: 12px;
}

/* NOTIFICATION TOAST (Minimalist) */
.toast-notification {
  position: fixed;
  bottom: 90px;
  right: 24px;
  background-color: var(--button-bg);
  color: var(--button-text);
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transform: translateY(120px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s;
  z-index: 1000;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 36px;
  }
  
  .hero-section p {
    font-size: 18px;
  }
  
  .tier-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 0;
    text-align: center;
  }
  
  .tier-actions {
    justify-content: center;
  }
  
  .tier-image-container {
    order: -1;
  }
  
  .config-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .config-visual {
    position: relative;
    top: 0;
  }
  
  .config-header-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .price-summary-sticky {
    text-align: left;
  }
  
  .bag-item {
    grid-template-columns: auto 1fr;
    gap: 20px;
    position: relative;
  }
  
  .bag-item-price-col {
    grid-column: 1 / span 2;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    margin-top: 10px;
  }
  
  .bag-summary-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .checkout-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .checkout-summary-col {
    position: relative;
    top: 0;
  }
  
  .sticky-bottom-container {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    text-align: center;
  }
  
  .sticky-bottom-actions {
    justify-content: space-between;
  }
  
  .sticky-bottom-bar {
    padding: 12px 16px;
  }
  
  body {
    padding-bottom: 120px; /* Space for sticky bottom bar on mobile */
  }
}