* {
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    height: 100%;
    --sidebar-bg: #0b2846;
    --sidebar-border: #313e5c;
    --section-accent-bg: #103a68;
    --divider-border: #25385b;
    --list-border: #25385b;
    --topbar-bg: #0b2846;
    --topbar-border: #25385b;
    --action-bg: #c7e4ff;
    --screen-bg: #c7e4ff;
    --screen-active-bg: #9BCEFF;
    --active-email-bg: #2762a1;
}

body[data-client="clientB"] {
    --sidebar-bg: #083640;
    --sidebar-border: #0e6e83;
    --section-accent-bg: #21606f;
    --divider-border: #175f70;
    --list-border: #175f70;
    --topbar-bg: #083640;
    --topbar-border: #175f70;
    --action-bg: #abeaf8;
    --screen-bg: #abeaf8;
    --screen-active-bg: #65bbce;
    --active-email-bg: #0d5b6c;
}

.container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

aside {
    width: 350px;
    border-right: 1px solid var(--sidebar-border);
    padding: 20px;
    background-color: var(--sidebar-bg);
    position: sticky;
    top: 0;
    align-self: flex-start;
    height: 100vh;
    overflow-y: auto;
}

h1, h2 {
    color: white;
    opacity: 0.8;
    margin-left: 10px;
}

.client-label {
    color: white;
    display: block;
    margin: 10px 10px 6px;
    font-size: 12px;
    letter-spacing: 0.6px;
}

.client-select {
    width: calc(100% - 20px);
    margin: 0 10px 16px;
    padding: 8px 10px;
    border-radius: 4px;
    border: 1px solid #a4a4a6;
    background: transparent;
    color: white;
}

h3 {
    background-color: var(--section-accent-bg);
    padding: 10px 15px;
    border-radius: 5px;
    color: white;
    opacity: 0.8;
    font-weight: 300;
}

hr {
    border: 1px solid var(--divider-border);
    border-radius: 5px;
}

.side-panel-campaigns-btns {
    display: flex; /* Enables Flexbox */
    align-items: center; /* Vertically centers items */
    gap: 8px; /* Adds space between image and text */
    padding-left: 15px;
    width: 100%;
    height: 40px;
    border-bottom: 1px solid var(--list-border);
    border-top: 0;
    border-left: 0;
    border-right: 0;
    background-color: transparent;
    font-size: 16px;
    color: rgb(209, 209, 209);
    cursor: pointer;
}

.side-panel-variations-btns {
    display: flex; /* Enables Flexbox */
    align-items: center; /* Vertically centers items */
    gap: 8px; /* Adds space between image and text */
    margin-left: 40px;
    width: 210px;
    height: 30px;
    border-bottom: 1px solid var(--list-border);
    border-top: 0;
    border-left: 0;
    border-right: 0;
    background-color: transparent;
    font-size: 16px;
    color: rgb(209, 209, 209);
    cursor: pointer;
}

.side-panel-emails-btns {
    display: flex; /* Enables Flexbox */
    align-items: center; /* Vertically centers items */
    gap: 8px; /* Adds space between image and text */
    width: 160px;
    padding-left: 20px;
    height: 30px;
    margin-left: 40px;
    border-bottom: 1px solid var(--list-border);
    border-top: 0;
    border-left: 0;
    border-right: 0;
    background-color: transparent;
    font-size: 16px;
    color: rgb(209, 209, 209);
    cursor: pointer;
}

.email-list-item {
    display: flex;
    justify-content: space-between;
}

.side-panel-emails-btns.active-email {
    background-color: var(--active-email-bg);
}

.side-panel-emails-btns:hover {
    background-color: var(--active-email-bg);
}

input[type='checkbox'] {
    cursor: pointer;
}

ul {
    list-style: none;
    padding: 0;
}

.top-bar {
    height: 80px;
    border-bottom: 1px solid var(--topbar-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--topbar-bg);
    position: sticky;
    top: 0;
    z-index: 5;
}

.export-container {
    display: flex;
}

#export-pdf, #export-png {
    padding: 7px;
    width: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    /* height: 100%; */
    border: 0;
    background-color: var(--action-bg);
    border-radius: 3px;
    color: black;
    cursor: pointer;
    margin-left: 5px;
}

#export-pdf:hover,
#export-png:hover {
    background-color: var(--screen-active-bg);
}

.screen-view-btn-wrapper {
    margin-right: 15px;
}

.screen-view-btn {
    padding: 5px;
    width: 70px;
    /* height: 100%; */
    border: 0;
    background-color: var(--screen-bg);
    border-radius: 3px;
    font-size: 12px;
    color: black;
    cursor: pointer;
}

.screen-view-btn:hover {
    background-color: var(--screen-active-bg);
}

.screen-view-btn.active-screen {
    background-color: var(--screen-active-bg);
}

.email-wrapper {
    margin: 20px auto;
    width: 600px;
    border: 0;
    height: auto;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
    background: #ffffff;
}

.email-side-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
}

#email-preview {
    height: auto;
    overflow: hidden;
    position: relative;
}

.loading-indicator {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    color: #1d2f59;
    font-size: 14px;
    font-weight: 600;
    z-index: 2;
}

#email-preview.loading .loading-indicator {
    display: flex;
}

iframe {
    width: 100%;
    border: 0;
    overflow: hidden;
    display: block;
}