Большой редизайн

src/App.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { onMounted } from 'vue'
+import { computed, onMounted, onUnmounted, watch } from 'vue'
 import { useTheme } from './composables/useTheme'
 import { useQrCode } from './composables/useQrCode'
 
@@ -11,68 +11,167 @@ const {
   errorColor,
   hasQr,
   qrCanvasRef,
+  qrFrameRef,
   generateQR,
   downloadQR,
   clearQR,
+  closeQrModal,
   zoomIn,
   zoomOut,
   restoreFromStorage,
 } = useQrCode()
 
+const statusClass = computed(() =>
+  errorColor.value === 'green' ? 'status--success' : 'status--error',
+)
+
+function onKeydown(event) {
+  if (event.key === 'Escape' && hasQr.value) {
+    closeQrModal()
+  }
+}
+
+watch(hasQr, (open) => {
+  document.body.style.overflow = open ? 'hidden' : ''
+})
+
 onMounted(() => {
   restoreFromStorage()
+  window.addEventListener('keydown', onKeydown)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('keydown', onKeydown)
+  document.body.style.overflow = ''
 })
 </script>
 
 <template>
-  <div class="logo">
+  <main class="app-shell">
-    <h1>Генератор QR-кодов</h1>
+    <div class="app-card">
-    <a href="https://github.com/IliaMiheev/iQR" target="_blank" title="Github">
+      <header class="logo">
-      <img src="/img/fluidicon.png" alt="GitHub" class="github-icon" />
+        <h1>Генератор QR-кодов</h1>
-    </a>
+        <a
-  </div>
+          href="https://github.com/IliaMiheev/iQR"
+          target="_blank"
+          rel="noopener noreferrer"
+          title="Github"
+          class="github-link"
+        >
+          <img src="/img/fluidicon.png" alt="GitHub" />
+        </a>
+      </header>
 
-  <div class="inputs">
+      <div class="inputs">
-    <textarea
+        <textarea
-      v-model="textInput"
+          v-model="textInput"
-      cols="30"
+          cols="30"
-      rows="3"
+          rows="3"
-      placeholder="Текст для генерации"
+          placeholder="Текст для генерации"
-    />
-    <div class="themeSwitch">
-      <div class="block" title="Изменить тему">
-        <input
-          id="theme-toggle"
-          type="checkbox"
-          :checked="isLightTheme"
-          @change="toggleTheme"
         />
-        <label for="theme-toggle" />
+        <div class="themeSwitch">
+          <div class="block" title="Изменить тему">
+            <input
+              id="theme-toggle"
+              type="checkbox"
+              :checked="isLightTheme"
+              @change="toggleTheme"
+            />
+            <label for="theme-toggle" />
+          </div>
+        </div>
+      </div>
+
+      <div class="btns btns1">
+        <button class="btn" title="Создать QR-код" @click="generateQR">Создать</button>
+        <button class="btn" title="Скачать QR-код" @click="downloadQR">Скачать</button>
+        <button class="btn3" title="Очистить поля" @click="clearQR">Очистить</button>
+      </div>
+
+      <div
+        v-if="!hasQr"
+        class="status-slot"
+        :class="{ 'status-slot--visible': error }"
+      >
+        <Transition name="status" mode="out-in">
+          <p v-if="error" :key="error" class="status" :class="statusClass">{{ error }}</p>
+        </Transition>
       </div>
     </div>
-  </div>
+  </main>
 
-  <div class="btns btns1">
+  <a
-    <button class="btn" title="Создать QR-код" @click="generateQR">Создать</button>
+    href="https://github.com/IliaMiheev/iQR"
-    <button class="btn" title="Скачать QR-код" @click="downloadQR">Скачать</button>
+    target="_blank"
-    <button class="btn3" title="Очистить поля" @click="clearQR">Очистить</button>
+    rel="noopener noreferrer"
-  </div>
+    class="site-banner"
+    title="Репозиторий на GitHub"
+  >
+    <span class="site-banner__brand">iQR</span>
+    <span class="site-banner__slogan">— qr-код без излишеств</span>
+  </a>
 
-  <div class="btns btns2">
+  <Teleport to="body">
-    <button title="Увеличить размер QR кода" @click="zoomIn">+</button>
+    <Transition name="qr-modal">
-    <button title="Уменьшить размер QR кода" @click="zoomOut">-</button>
+      <div
-  </div>
+        v-if="hasQr"
+        class="qr-modal"
+        role="dialog"
+        aria-modal="true"
+        aria-label="QR-код"
+      >
+        <div class="qr-modal__backdrop" @click="closeQrModal" />
 
-  <p v-if="error" :style="{ color: errorColor }">{{ error }}</p>
+        <aside class="qr-modal__toolbar" aria-label="Инструменты" @click.stop>
+          <button type="button" title="Увеличить" @click="zoomIn">+</button>
+          <button
+            type="button"
+            class="qr-modal__tool-btn"
+            title="Скачать"
+            aria-label="Скачать"
+            @click="downloadQR"
+          >
+            <svg viewBox="0 0 24 24" width="18" height="18" aria-hidden="true">
+              <path
+                d="M12 4v10M8 11l4 4 4-4M5 20h14"
+                fill="none"
+                stroke="currentColor"
+                stroke-width="2"
+                stroke-linecap="round"
+                stroke-linejoin="round"
+              />
+            </svg>
+          </button>
+          <button type="button" title="Уменьшить" @click="zoomOut">−</button>
+        </aside>
 
-  <div id="qr-code">
+        <div class="qr-modal__dialog" @click.stop>
-    <canvas v-show="hasQr" ref="qrCanvasRef" />
+          <button
-  </div>
+            class="qr-modal__close"
+            type="button"
+            title="Закрыть"
+            aria-label="Закрыть"
+            @click="closeQrModal"
+          >
+            ×
+          </button>
+
+          <div class="qr-modal__viewport">
+            <div id="qr-code" ref="qrFrameRef">
+              <canvas ref="qrCanvasRef" />
+            </div>
+          </div>
+
+          <div
+            class="qr-modal__status-slot"
+            :class="{ 'qr-modal__status-slot--visible': error }"
+          >
+            <Transition name="status" mode="out-in">
+              <p v-if="error" :key="error" class="status" :class="statusClass">{{ error }}</p>
+            </Transition>
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
 </template>
-
-<style scoped>
-.github-icon {
-  width: 40px;
-  height: 40px;
-}
-</style>

src/assets/style.css

@@ -5,35 +5,131 @@
 
 html {
     cursor: url(/img/Orange_cursor.png), default !important;
+    transition: background-color 0.35s ease, color 0.35s ease;
 }
 
 html.dark {
-    background-color: #1e1e1e;
+    --bg: #1a1a1e;
+    --bg-accent: rgba(255, 69, 0, 0.06);
+    --surface: rgba(38, 38, 42, 0.72);
+    --surface-hover: rgba(52, 52, 58, 0.88);
+    --surface-solid: rgba(30, 30, 34, 0.85);
+    --surface-border: rgba(255, 255, 255, 0.1);
+    --text: #f2f2f2;
+    --text-muted: #9a9a9a;
+    --placeholder: rgba(255, 255, 255, 0.35);
+    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
+    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
+    --accent: orangered;
+    --accent-glow: rgba(255, 69, 0, 0.35);
+    --canvas-bg: #fff;
+    --canvas-border: rgba(255, 255, 255, 0.15);
+
+    background-color: var(--bg);
+    background-image:
+        radial-gradient(ellipse 80% 50% at 50% -10%, var(--bg-accent), transparent),
+        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(255, 69, 0, 0.04), transparent);
 }
 
 html.light {
-    background-color: #fff;
+    --bg: #f4f4f6;
+    --bg-accent: rgba(255, 69, 0, 0.08);
+    --surface: rgba(255, 255, 255, 0.78);
+    --surface-hover: rgba(255, 255, 255, 0.95);
+    --surface-solid: rgba(255, 255, 255, 0.92);
+    --surface-border: rgba(0, 0, 0, 0.08);
+    --text: #1e1e1e;
+    --text-muted: #666;
+    --placeholder: rgba(0, 0, 0, 0.35);
+    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.06);
+    --accent: orangered;
+    --accent-glow: rgba(255, 69, 0, 0.25);
+    --canvas-bg: #fff;
+    --canvas-border: rgba(0, 0, 0, 0.1);
+
+    background-color: var(--bg);
+    background-image:
+        radial-gradient(ellipse 80% 50% at 50% -10%, var(--bg-accent), transparent),
+        radial-gradient(ellipse 60% 40% at 0% 100%, rgba(255, 69, 0, 0.05), transparent);
 }
 
 body {
     font-family: Arial, sans-serif;
-    margin: 20px;
+    margin: 0;
+    padding: 24px 20px 88px;
     text-align: center;
+    color: var(--text);
+    transition: color 0.35s ease;
+    min-height: 100vh;
+    box-sizing: border-box;
 }
 
 #app {
     width: 100%;
 }
 
+.app-shell {
+    max-width: 560px;
+    margin: 0 auto;
+}
+
+.app-card {
+    width: 100%;
+    padding: 28px 24px 32px;
+    border-radius: 20px;
+    background: var(--surface);
+    border: 1px solid var(--surface-border);
+    box-shadow: var(--shadow);
+    backdrop-filter: blur(16px);
+    -webkit-backdrop-filter: blur(16px);
+    transition:
+        background-color 0.35s ease,
+        border-color 0.35s ease,
+        box-shadow 0.35s ease;
+}
+
 .logo {
     display: flex;
     justify-content: center;
+    align-items: center;
     gap: 15px;
+    margin-bottom: 8px;
 }
 
 h1 {
     margin: 0;
-    color: orangered;
+    color: var(--accent);
+    font-size: 1.6rem;
+    letter-spacing: -0.02em;
+    transition: color 0.35s ease;
+}
+
+.github-link {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 44px;
+    height: 44px;
+    border-radius: 12px;
+    background: var(--surface-solid);
+    border: 1px solid var(--surface-border);
+    transition:
+        background-color 0.25s ease,
+        border-color 0.25s ease,
+        transform 0.2s ease,
+        box-shadow 0.25s ease;
+}
+
+.github-link:hover {
+    background: var(--surface-hover);
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-sm);
+}
+
+.github-link img {
+    width: 28px;
+    height: 28px;
 }
 
 img {
@@ -42,20 +138,53 @@ img {
 
 a {
     cursor: url(/img/Orange_cursor.png), pointer !important;
+    text-decoration: none;
 }
 
 .inputs {
     display: flex;
     justify-content: center;
+    align-items: flex-start;
+    gap: 12px;
+    margin-top: 16px;
 }
 
-textarea,
+textarea {
-button {
+    flex: 1;
-    padding: 10px;
+    max-width: 360px;
-    margin: 10px;
+    min-height: 80px;
-    border: none;
+    padding: 14px 16px;
-    border-radius: 5px;
+    margin: 0;
+    border: 1px solid var(--surface-border);
+    border-radius: 14px;
     font-size: 16px;
+    font-family: inherit;
+    resize: vertical;
+    color: var(--accent);
+    background: var(--surface-solid);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    box-shadow: var(--shadow-sm);
+    transition:
+        background-color 0.35s ease,
+        border-color 0.25s ease,
+        box-shadow 0.25s ease,
+        color 0.35s ease;
+}
+
+textarea::placeholder {
+    color: var(--placeholder);
+}
+
+textarea:focus {
+    outline: none;
+    border-color: var(--accent);
+    box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow-sm);
+}
+
+textarea::selection {
+    background-color: orangered;
+    color: white;
 }
 
 .themeSwitch input[type="checkbox"] {
@@ -65,57 +194,67 @@ button {
 
 .themeSwitch {
     --size: 50px;
+    flex-shrink: 0;
 }
 
 .themeSwitch .block {
     position: relative;
-    clear: both;
-    float: left;
 }
 
 .themeSwitch label {
+    display: block;
     width: var(--size);
     height: calc(var(--size) / 2);
     box-sizing: border-box;
-    border: 3px solid;
+    border: 2px solid var(--surface-border);
-    float: left;
     border-radius: 100px;
     position: relative;
     cursor: pointer;
-    transition: .3s ease;
+    transition:
-    color: black;
+        background-color 0.35s ease,
-    background: white;
+        border-color 0.35s ease,
+        box-shadow 0.25s ease;
+    background: var(--surface-solid);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
     cursor: url(/img/Orange_pointer.png), pointer !important;
-    margin-top: 10px;
+    margin-top: 14px;
+    box-shadow: var(--shadow-sm);
+}
+
+.themeSwitch label:hover {
+    border-color: var(--accent);
+    box-shadow: 0 0 0 3px var(--accent-glow);
 }
 
 .themeSwitch input[type=checkbox]:checked+label {
-    background: orangered;
+    background: var(--accent);
+    border-color: var(--accent);
 }
 
 .themeSwitch input[type=checkbox]:checked+label:before {
     left: calc(var(--size) / 2);
-    background: white;
+    background: #fff;
 }
 
 .themeSwitch label:before {
-    transition: .3s ease;
+    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.35s ease;
     content: '';
     width: calc((var(--size) / 2) - 10px);
     height: calc((var(--size) / 2) - 10px);
     position: absolute;
-    background: orangered;
+    background: var(--accent);
     left: 5px;
-    top: 2px;
+    top: 3px;
     box-sizing: border-box;
-    border: 3px solid;
-    color: black;
     border-radius: 100px;
+    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
 }
 
 .btns {
-    margin: 7px auto;
+    margin: 16px auto 0;
-    width: 60%;
+    width: 100%;
+    max-width: 400px;
     display: grid;
     gap: 10px;
 }
@@ -126,18 +265,42 @@ button {
 
 .btns2 {
     grid-template-columns: 1fr 1fr;
+    max-width: 200px;
 }
 
 .btns2 button {
-    font-size: 1.5em;
+    font-size: 1.4em;
+    font-weight: 600;
 }
 
-@media (max-width:500px) {
+@media (max-width: 500px) {
+    .app-card {
+        padding: 20px 16px 24px;
+        border-radius: 16px;
+    }
+
+    .inputs {
+        flex-direction: column;
+        align-items: center;
+    }
+
+    textarea {
+        max-width: 100%;
+        width: 100%;
+        box-sizing: border-box;
+    }
+
+    .themeSwitch label {
+        margin-top: 0;
+    }
+
     .btns {
-        display: grid;
+        max-width: 100%;
+    }
+
+    .btns1 {
         grid-template-columns: 1fr 1fr;
-        grid-template-rows: auto 1fr;
+        grid-template-rows: auto auto;
-        gap: 8px;
     }
 
     .btn3 {
@@ -145,50 +308,349 @@ button {
     }
 }
 
-.btns button {
-    margin: 0;
-}
-
-textarea {
-    color: orangered;
-    border: 1px solid #000;
-}
-
-textarea::selection {
-    background-color: orangered;
-    color: white;
-}
-
-input[type='checkbox'] {
-    accent-color: orangered;
-    cursor: url(/img/Orange_pointer.png), pointer !important;
-    margin: auto 0;
-}
-
 button {
-    background-color: orangered;
+    padding: 11px 16px;
+    margin: 0;
+    border: none;
+    border-radius: 12px;
+    font-size: 15px;
+    font-family: inherit;
+    font-weight: 600;
     cursor: pointer;
     cursor: url(/img/Orange_pointer.png), pointer !important;
+    transition:
+        background-color 0.25s ease,
+        color 0.35s ease,
+        border-color 0.25s ease,
+        transform 0.15s ease,
+        box-shadow 0.25s ease;
 }
 
-html.dark button {
+.btn {
+    background-color: var(--accent);
     color: #fff;
+    box-shadow: 0 4px 14px var(--accent-glow);
 }
 
-html.light button {
+.btn:hover {
-    color: #1e1e1e;
+    background-color: #ff5722;
+    transform: translateY(-1px);
+    box-shadow: 0 6px 20px var(--accent-glow);
+}
+
+.btn:active {
+    transform: translateY(0);
+    background-color: rgb(200, 55, 0);
+}
+
+.btn3,
+.btns2 button {
+    background: var(--surface-solid);
+    color: var(--text);
+    border: 1px solid var(--surface-border);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    box-shadow: var(--shadow-sm);
+}
+
+.btn3:hover,
+.btns2 button:hover {
+    background: var(--surface-hover);
+    border-color: var(--accent);
+    transform: translateY(-1px);
+    box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow-sm);
+}
+
+.btn3:active,
+.btns2 button:active {
+    transform: translateY(0);
+    background: var(--surface);
 }
 
 button::selection {
     background-color: rgb(172, 46, 0);
 }
 
-button:active {
+.status-slot {
-    background-color: rgb(135, 36, 0);
+    position: relative;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+
+.status-slot--visible {
+    margin-top: 16px;
+    min-height: 36px;
+}
+
+.status {
+    display: inline-block;
+    margin: 0;
+    padding: 8px 18px;
+    border-radius: 999px;
+    font-size: 14px;
+    line-height: 1.3;
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    transition:
+        background-color 0.35s ease,
+        color 0.35s ease,
+        border-color 0.35s ease,
+        box-shadow 0.35s ease;
+}
+
+.status-enter-active {
+    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
+}
+
+.status-leave-active {
+    transition: opacity 0.2s ease, transform 0.2s ease;
+}
+
+.status-enter-from {
+    opacity: 0;
+    transform: translateY(10px) scale(0.94);
+}
+
+.status-leave-to {
+    opacity: 0;
+    transform: translateY(-6px) scale(0.97);
+}
+
+.status--error {
+    color: #ff6b6b;
+    background: rgba(255, 80, 80, 0.12);
+    border: 1px solid rgba(255, 80, 80, 0.25);
+}
+
+.status--success {
+    color: #4cd97b;
+    background: rgba(60, 200, 100, 0.12);
+    border: 1px solid rgba(60, 200, 100, 0.25);
+}
+
+html.light .status--error {
+    color: #d63030;
+    background: rgba(214, 48, 48, 0.1);
+    border-color: rgba(214, 48, 48, 0.2);
+}
+
+html.light .status--success {
+    color: #27ae60;
+    background: rgba(39, 174, 96, 0.1);
+    border-color: rgba(39, 174, 96, 0.2);
+}
+
+.qr-modal {
+    position: fixed;
+    inset: 0;
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 24px;
+}
+
+.qr-modal__backdrop {
+    position: absolute;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.55);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+}
+
+html.light .qr-modal__backdrop {
+    background: rgba(0, 0, 0, 0.3);
+}
+
+.qr-modal__dialog {
+    position: relative;
+    z-index: 1;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 16px;
+    padding: 20px;
+    border-radius: 24px;
+    background: var(--surface);
+    border: 1px solid var(--surface-border);
+    box-shadow: var(--shadow);
+    backdrop-filter: blur(20px);
+    -webkit-backdrop-filter: blur(20px);
+    max-width: calc(100vw - 48px);
+    max-height: calc(100vh - 48px);
+    overflow: visible;
+}
+
+.qr-modal__close {
+    position: absolute;
+    top: -14px;
+    right: -14px;
+    z-index: 20;
+    width: 36px;
+    height: 36px;
+    padding: 0;
+    border: 1px solid var(--surface-border);
+    border-radius: 50%;
+    background: var(--surface-solid);
+    color: var(--text);
+    font-size: 22px;
+    line-height: 1;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    box-shadow: var(--shadow-sm);
+}
+
+.qr-modal__close:hover {
+    border-color: var(--accent);
+    color: var(--accent);
+    transform: scale(1.05);
+}
+
+.qr-modal__viewport {
+    display: flex;
+    justify-content: center;
+    align-items: flex-start;
+    overflow: auto;
+    max-height: calc(100vh - 180px);
+    width: 100%;
+}
+
+.qr-modal__toolbar {
+    position: fixed;
+    right: 20px;
+    top: 50%;
+    z-index: 1002;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    padding: 6px;
+    border-radius: 12px;
+    background: var(--surface-solid);
+    border: 1px solid var(--surface-border);
+    box-shadow: var(--shadow-sm);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    transform: translateY(-50%);
+}
+
+.qr-modal__toolbar button {
+    width: 36px;
+    height: 36px;
+    margin: 0;
+    padding: 0;
+    font-size: 1.25em;
+    font-weight: 600;
+    line-height: 1;
+    background: transparent;
+    color: var(--text);
+    border: 1px solid transparent;
+    border-radius: 8px;
+    box-shadow: none;
+}
+
+.qr-modal__toolbar button:hover {
+    background: var(--surface-hover);
+    border-color: var(--surface-border);
+    transform: none;
+    box-shadow: none;
+}
+
+.qr-modal__toolbar button:active {
+    background: var(--surface);
+    transform: scale(0.96);
+}
+
+.qr-modal__tool-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.qr-modal__tool-btn:hover {
+    color: var(--accent);
+    border-color: var(--accent) !important;
+}
+
+.qr-modal__status-slot {
+    position: relative;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    width: 100%;
+    min-height: 0;
+}
+
+.qr-modal__status-slot--visible {
+    min-height: 36px;
+}
+
+.qr-modal-enter-active,
+.qr-modal-leave-active {
+    transition: opacity 0.35s ease;
+}
+
+.qr-modal-enter-active .qr-modal__backdrop,
+.qr-modal-leave-active .qr-modal__backdrop {
+    transition: opacity 0.35s ease;
+}
+
+.qr-modal-enter-active .qr-modal__dialog,
+.qr-modal-leave-active .qr-modal__dialog {
+    transition:
+        opacity 0.4s ease,
+        transform 0.4s cubic-bezier(0.34, 1.35, 0.64, 1);
+}
+
+.qr-modal-enter-active .qr-modal__toolbar,
+.qr-modal-leave-active .qr-modal__toolbar {
+    transition:
+        opacity 0.35s ease,
+        transform 0.35s cubic-bezier(0.34, 1.2, 0.64, 1);
+}
+
+.qr-modal-enter-from,
+.qr-modal-leave-to {
+    opacity: 1;
+}
+
+.qr-modal-enter-from .qr-modal__backdrop,
+.qr-modal-leave-to .qr-modal__backdrop {
+    opacity: 0;
+}
+
+.qr-modal-enter-from .qr-modal__dialog,
+.qr-modal-leave-to .qr-modal__dialog {
+    opacity: 0;
+    transform: scale(0.86) translateY(24px);
+}
+
+.qr-modal-enter-from .qr-modal__toolbar,
+.qr-modal-leave-to .qr-modal__toolbar {
+    opacity: 0;
+    transform: translateY(-50%) translateX(16px);
 }
 
 #qr-code {
-    margin-top: 20px;
+    display: inline-flex;
+    padding: 16px;
+    border-radius: 16px;
+    background: var(--surface-solid);
+    border: 1px solid var(--surface-border);
+    box-shadow: var(--shadow-sm);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    transition:
+        background-color 0.35s ease,
+        border-color 0.35s ease,
+        box-shadow 0.35s ease;
+}
+
+#qr-code:empty {
+    display: none;
 }
 
 #qr-code img {
@@ -197,5 +659,93 @@ button:active {
 }
 
 canvas {
-    border: 1px solid #000;
+    display: block;
+    border-radius: 8px;
+    background: var(--canvas-bg);
+    border: 1px solid var(--canvas-border);
+    image-rendering: pixelated;
+    transition: border-color 0.35s ease;
+}
+
+.site-banner {
+    position: fixed;
+    bottom: 20px;
+    left: 50%;
+    transform: translateX(-50%);
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+    padding: 10px 22px;
+    border-radius: 999px;
+    text-decoration: none;
+    font-size: 15px;
+    line-height: 1.2;
+    white-space: nowrap;
+    z-index: 10;
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    transition:
+        background-color 0.35s ease,
+        color 0.35s ease,
+        border-color 0.35s ease,
+        box-shadow 0.35s ease;
+}
+
+html.dark .site-banner {
+    background-color: rgba(30, 30, 30, 0.72);
+    color: #f5f5f5;
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
+}
+
+html.light .site-banner {
+    background-color: rgba(255, 255, 255, 0.78);
+    color: #1e1e1e;
+    border: 1px solid rgba(0, 0, 0, 0.08);
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
+}
+
+html.dark .site-banner:hover {
+    background-color: rgba(45, 45, 45, 0.88);
+    color: #fff;
+}
+
+html.light .site-banner:hover {
+    background-color: rgba(255, 255, 255, 0.95);
+}
+
+.site-banner__brand {
+    font-weight: 700;
+    color: orangered;
+}
+
+.site-banner__slogan {
+    font-weight: 400;
+}
+
+@media (max-width: 500px) {
+    .qr-modal {
+        padding: 16px;
+    }
+
+    .qr-modal__dialog {
+        padding: 16px;
+        border-radius: 20px;
+    }
+
+    .qr-modal__close {
+        top: -10px;
+        right: -10px;
+    }
+
+    .qr-modal__toolbar {
+        right: 12px;
+    }
+
+    .site-banner {
+        max-width: calc(100% - 32px);
+        white-space: normal;
+        text-align: center;
+        font-size: 14px;
+    }
 }

src/composables/useQrCode.js

@@ -1,6 +1,11 @@
 import { ref, nextTick } from 'vue'
 import QRCode from 'qrcode'
 
+const BASE_QR_SIZE = 256
+const MAX_WIDTH_RATIO = 0.8
+const MIN_SCALE = 0.5
+const SCALE_STEP = 0.1
+
 export function useQrCode() {
   const textInput = ref('')
   const error = ref('')
@@ -8,17 +13,41 @@ export function useQrCode() {
   const scale = ref(1)
   const hasQr = ref(false)
   const qrCanvasRef = ref(null)
+  const qrFrameRef = ref(null)
 
   function logMessage(message, color = 'red') {
     error.value = message
     errorColor.value = color
   }
 
-  function applyScale() {
+  function getFrameWidth() {
+    return qrFrameRef.value?.getBoundingClientRect().width ?? 0
+  }
+
+  function getMaxWidth() {
+    return window.innerWidth * MAX_WIDTH_RATIO
+  }
+
+  function persistScale() {
+    localStorage.setItem('scale', String(scale.value))
+  }
+
+  async function renderQrCanvas() {
     const canvas = qrCanvasRef.value
-    if (!canvas) return
+    const userText = textInput.value.trim()
-    canvas.style.transform = `scale(${scale.value})`
+    if (!canvas || !userText) return
-    canvas.style.transformOrigin = 'top'
+
+    const width = Math.round(BASE_QR_SIZE * scale.value)
+    await QRCode.toCanvas(canvas, userText, { width })
+  }
+
+  async function clampScaleIfNeeded() {
+    await nextTick()
+    if (getFrameWidth() > getMaxWidth()) {
+      scale.value = 1
+      persistScale()
+      await renderQrCanvas()
+    }
   }
 
   async function generateQR() {
@@ -34,15 +63,9 @@ export function useQrCode() {
     await nextTick()
 
     try {
-      await QRCode.toCanvas(qrCanvasRef.value, userText)
+      await renderQrCanvas()
       logMessage('')
-      applyScale()
+      await clampScaleIfNeeded()
-
-      const canvasWidth = qrCanvasRef.value.getBoundingClientRect().width
-      if (canvasWidth > window.innerWidth * 0.8) {
-        scale.value = 1
-        applyScale()
-      }
     } catch (err) {
       console.error(err)
       logMessage('Ошибка при генерации QR-кода.')
@@ -79,44 +102,47 @@ export function useQrCode() {
     localStorage.removeItem('scale')
   }
 
-  function zoomIn() {
+  function closeQrModal() {
-    const canvas = qrCanvasRef.value
+    hasQr.value = false
-    if (!canvas) {
-      logMessage('До генерации QR кода маштаб менять нельзя')
-      return
-    }
-
-    localStorage.setItem('scale', scale.value)
-    const canvasWidth = canvas.getBoundingClientRect().width
-
-    if (canvasWidth + 0.1 < window.innerWidth * 0.8) {
-      scale.value += 0.1
-      applyScale()
-    } else {
-      logMessage('Достигнут максимальный размер QR кода')
-    }
   }
 
-  function zoomOut() {
+  async function zoomIn() {
-    const canvas = qrCanvasRef.value
+    if (!qrFrameRef.value || !textInput.value.trim()) {
-    if (!canvas) {
       logMessage('До генерации QR кода маштаб менять нельзя')
       return
     }
 
-    localStorage.setItem('scale', scale.value)
+    const previousScale = scale.value
-    const canvasWidth = canvas.getBoundingClientRect().width
+    scale.value += SCALE_STEP
+    await renderQrCanvas()
+    await nextTick()
 
-    if (canvasWidth > window.innerWidth * 0.8) {
+    if (getFrameWidth() > getMaxWidth()) {
-      scale.value = 1
+      scale.value = previousScale
+      await renderQrCanvas()
+      logMessage('Достигнут максимальный размер QR кода')
+      return
     }
 
-    if (scale.value > 0.5) {
+    persistScale()
-      scale.value -= 0.1
+    logMessage('')
-      applyScale()
+  }
-    } else {
+
+  async function zoomOut() {
+    if (!qrFrameRef.value || !textInput.value.trim()) {
+      logMessage('До генерации QR кода маштаб менять нельзя')
+      return
+    }
+
+    if (scale.value <= MIN_SCALE) {
       logMessage('Достигнут минимальный размер QR кода')
+      return
     }
+
+    scale.value -= SCALE_STEP
+    await renderQrCanvas()
+    persistScale()
+    logMessage('')
   }
 
   async function restoreFromStorage() {
@@ -136,12 +162,13 @@ export function useQrCode() {
     textInput,
     error,
     errorColor,
-    scale,
     hasQr,
     qrCanvasRef,
+    qrFrameRef,
     generateQR,
     downloadQR,
     clearQR,
+    closeQrModal,
     zoomIn,
     zoomOut,
     restoreFromStorage,