/* ============================================
   GLOBAL STYLES - Shared across all pages
   ============================================ */

/* CSS Variables (Iristel Brand) */
:root {
    --rich-black: #01111E;
    --tufts-blue: #004a9f;
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --medium-gray: #E8ECF1;
    --text-gray: #5A6A7A;
    --magenta-glow: #d1155a;
    --cyan-glow: #004a9f;
    --magenta-accent: #d1155a;
    --cyan-accent: #004a9f;
    --selected-bg: rgba(0, 74, 159, 0.08);
}

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

body {
    font-family: 'Heebo', sans-serif;
    background-color: var(--light-gray);
    min-height: 100vh;
    color: var(--rich-black);
}

/* ============================================
   LOGO
   ============================================ */
.logo-img {
    height: 36px;
    width: auto;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* ============================================
   PROGRESS INDICATOR
   ============================================ */
.progress-container {
    margin-bottom: 40px;
}

.progress-text {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.progress-bar {
    height: 4px;
    background-color: var(--medium-gray);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #d1155a 0%, #d1155a 100%);
    border-radius: 2px;
}

/* ============================================
   PAGE TITLES
   ============================================ */
.page-title {
    font-size: 28px;
    font-weight: 500;
    color: var(--rich-black);
    margin-bottom: 30px;
}

.page-subtitle {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 40px;
}

/* ============================================
   TWO-PANEL LAYOUT
   ============================================ */
.container {
    display: flex;
    min-height: 100vh;
}

.left-panel {
    flex: 1;
    padding: 40px 60px;
    display: flex;
    flex-direction: column;
    background-color: var(--white);
    position: relative;
}

.right-panel {
    width: 50%;
    max-width: 720px;
    background: var(--rich-black);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ============================================
   GRADIENT CIRCLES (Right Panel Background)
   ============================================ */
.gradient-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
}

.gradient-circle.magenta {
    width: 400px;
    height: 400px;
    background: var(--magenta-glow);
    bottom: -100px;
    right: -100px;
}

.gradient-circle.cyan {
    width: 350px;
    height: 350px;
    background: var(--cyan-glow);
    top: 50%;
    left: -100px;
    opacity: 0.4;
}

/* ============================================
   PROMO CONTENT (Right Panel)
   ============================================ */
.promo-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 60px;
    position: relative;
    z-index: 2;
}

.promo-text {
    text-align: center;
    color: var(--white);
}

.promo-headline {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.promo-subheadline {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.promo-subheadline span {
    color: var(--tufts-blue);
}

/* Discount promo (signUp, serviceAvailability) */
.discount-value {
    font-size: 140px;
    font-weight: 300;
    line-height: 1;
    color: var(--tufts-blue);
    letter-spacing: -8px;
}

.discount-value span {
    font-size: 80px;
    vertical-align: top;
    letter-spacing: 0;
}

.discount-label {
    font-size: 42px;
    font-weight: 700;
    margin-top: -10px;
    letter-spacing: 1px;
}

.discount-sublabel {
    font-size: 42px;
    font-weight: 700;
    color: var(--tufts-blue);
    letter-spacing: 1px;
}

.promo-description {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 20px;
    max-width: 400px;
}

.promo-buttons {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 30px;
}

/* Laptop illustration (signUp, serviceAvailability) */
.laptop-image {
    width: 100%;
    max-width: 480px;
    margin-bottom: 40px;
    position: relative;
}

.laptop-frame {
    background: linear-gradient(135deg, #2A3A4A 0%, #1A2A3A 100%);
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.laptop-screen {
    background: linear-gradient(180deg, #E8F0F8 0%, #D0E0F0 100%);
    border-radius: 4px;
    aspect-ratio: 16/10;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

.video-call-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 20px;
    width: 100%;
}

.video-participant {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #F0F4F8 0%, #E0E8F0 100%);
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.participant-avatar {
    width: 60%;
    height: 80%;
    background: linear-gradient(180deg, #FFD5C8 0%, #F5C4B8 30%, #8BC4E0 30%, #7AB8D8 100%);
    border-radius: 50% 50% 0 0;
}

.laptop-base {
    height: 12px;
    background: linear-gradient(180deg, #3A4A5A 0%, #2A3A4A 100%);
    border-radius: 0 0 8px 8px;
    margin-top: 4px;
}

/* Right panel logo (pickNumber, numberSelection) */
.right-logo {
    padding: 40px 60px;
    position: relative;
    z-index: 2;
}

.right-logo-img {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-back {
    background: var(--tufts-blue);
    color: var(--white);
    padding: 16px 48px;
    border: none;
    border-radius: 4px;
    font-family: 'Heebo', sans-serif;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-back:hover {
    background: #003d85;
    transform: translateY(-1px);
}

.btn-next {
    background: var(--tufts-blue);
    color: var(--white);
    padding: 16px 48px;
    border: none;
    border-radius: 4px;
    font-family: 'Heebo', sans-serif;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-next:hover {
    background: #003d85;
    transform: translateY(-1px);
}

.btn-proceed {
    background: var(--tufts-blue);
    color: var(--white);
    padding: 16px 48px;
    border: none;
    border-radius: 4px;
    font-family: 'Heebo', sans-serif;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-proceed:hover {
    background: #003d85;
    transform: translateY(-1px);
}

.btn-explore {
    background: var(--tufts-blue);
    color: var(--white);
    padding: 14px 28px;
    border: none;
    border-radius: 4px;
    font-family: 'Heebo', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
    text-transform: uppercase;
}

.btn-explore:hover {
    background: #003d85;
    transform: translateY(-1px);
}

/* ============================================
   NAVIGATION BUTTONS CONTAINER
   ============================================ */
.nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 20px;
}

/* ============================================
   LEARN MORE LINK
   ============================================ */
.learn-more {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: opacity 0.2s ease;
}

.learn-more:hover {
    opacity: 0.8;
}

.learn-more svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   RADIO INPUTS
   ============================================ */
.radio-option {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.radio-input {
    width: 20px;
    height: 20px;
    border: 2px solid var(--medium-gray);
    border-radius: 50%;
    appearance: none;
    cursor: pointer;
    transition: border-color 0.2s ease;
    position: relative;
    flex-shrink: 0;
}

.radio-input:hover {
    border-color: var(--tufts-blue);
}

.radio-input:checked {
    border-color: var(--tufts-blue);
}

.radio-input:checked::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--tufts-blue);
    border-radius: 50%;
}

.radio-label {
    font-size: 15px;
    color: var(--rich-black);
}

/* ============================================
   FILTER / SELECT DROPDOWNS
   ============================================ */
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--rich-black);
}

.filter-select {
    padding: 12px 40px 12px 16px;
    font-size: 15px;
    font-family: 'Heebo', sans-serif;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    background-color: var(--white);
    color: var(--rich-black);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A6A7A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    min-width: 140px;
    transition: border-color 0.2s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--tufts-blue);
}

.filter-select:hover {
    border-color: var(--tufts-blue);
}

/* ============================================
   NUMBER LIST (numberSelection, portNumber)
   ============================================ */
.numbers-list {
    overflow-y: auto;
    margin-bottom: 30px;
}

.number-item {
    padding: 16px 20px;
    font-size: 16px;
    color: var(--rich-black);
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.15s ease;
    margin-bottom: 4px;
}

.number-item:hover {
    background-color: var(--light-gray);
}

.number-item.selected {
    background-color: var(--selected-bg);
}

/* ============================================
   PHONE ILLUSTRATION (pickNumber, numberSelection)
   ============================================ */
.phone-illustration {
    width: 100%;
    max-width: 500px;
    margin-bottom: 50px;
    position: relative;
}

.phone-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    opacity: 0.85;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(1, 17, 30, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--tufts-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-content p {
    font-size: 16px;
    font-weight: 400;
}

/* ============================================
   MESSAGE BOX
   ============================================ */
.message-box {
    padding: 0;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 16px;
    transition: all 0.3s ease;
}

.message-box.success {
    padding: 14px 20px;
    background-color: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #A5D6A7;
}

.message-box.error {
    padding: 14px 20px;
    background-color: #FFEBEE;
    color: #C62828;
    border: 1px solid #EF9A9A;
}

/* ============================================
   RESPONSIVE - TWO-PANEL LAYOUT
   ============================================ */
@media (max-width: 1200px) {
    .right-panel {
        width: 45%;
    }

    .left-panel {
        padding: 30px 40px;
    }

    .discount-value {
        font-size: 100px;
    }

    .discount-label,
    .discount-sublabel {
        font-size: 32px;
    }

    .promo-headline {
        font-size: 36px;
    }
}

@media (max-width: 900px) {
    .container {
        flex-direction: column;
    }

    .left-panel {
        padding: 30px;
    }

    .right-panel {
        width: 100%;
        max-width: none;
        min-height: 500px;
    }
}