/* =========================================================
   LUMINA MESSENGER
   Design : ciel clair + coucher de soleil + nature
========================================================= */


/* =========================================================
   VARIABLES
========================================================= */

:root {

    --sky: #8ecae6;

    --sky-light: #dff6ff;

    --cloud: #ffffff;

    --sun: #ffd166;

    --sunset: #ffb4a2;

    --peach: #ffd6c9;

    --nature: #b7e4c7;

    --green: #74c69d;

    --deep-sky: #277da1;

    --text: #243746;

    --text-soft: #718096;

    --white-glass: rgba(255, 255, 255, 0.78);

    --border: rgba(255, 255, 255, 0.7);

    --shadow: 0 20px 60px rgba(49, 91, 116, 0.15);

}


/* =========================================================
   RESET
========================================================= */

* {

    box-sizing: border-box;

    margin: 0;

    padding: 0;

}


body {

    font-family:

        "Inter",

        "Segoe UI",

        Arial,

        sans-serif;

    color: var(--text);

    min-height: 100vh;

    overflow: hidden;

}


/* =========================================================
   FOND CIEL
========================================================= */

.sky-background {

    position: fixed;

    inset: 0;

    z-index: -10;

    overflow: hidden;

    background:

        linear-gradient(

            135deg,

            #dff6ff 0%,

            #bde0fe 35%,

            #ffd6c9 72%,

            #ffe5b4 100%

        );

}


.sun-glow {

    position: absolute;

    width: 480px;

    height: 480px;

    right: 5%;

    top: -220px;

    border-radius: 50%;

    background:

        radial-gradient(

            circle,

            rgba(255, 209, 102, 0.65),

            rgba(255, 180, 162, 0.2) 45%,

            transparent 70%

        );

}


.cloud {

    position: absolute;

    width: 230px;

    height: 70px;

    border-radius: 100px;

    background: rgba(255, 255, 255, 0.34);

    filter: blur(1px);

}


.cloud::before,

.cloud::after {

    content: "";

    position: absolute;

    background: inherit;

    border-radius: 50%;

}


.cloud::before {

    width: 100px;

    height: 100px;

    left: 30px;

    bottom: 0;

}


.cloud::after {

    width: 130px;

    height: 130px;

    right: 25px;

    bottom: 0;

}


.cloud-one {

    top: 10%;

    left: 5%;

    transform: scale(0.8);

}


.cloud-two {

    top: 70%;

    right: -40px;

    transform: scale(1.2);

}


.cloud-three {

    top: 38%;

    left: 48%;

    transform: scale(0.6);

}


/* =========================================================
   APPLICATION PRINCIPALE
========================================================= */

.lumina-messenger {

    width: min(1500px, 96vw);

    height: 94vh;

    margin: 3vh auto;

    display: flex;

    overflow: hidden;

    border: 1px solid var(--border);

    border-radius: 30px;

    background: rgba(255, 255, 255, 0.42);

    backdrop-filter: blur(25px);

    -webkit-backdrop-filter: blur(25px);

    box-shadow: var(--shadow);

}


/* =========================================================
   SIDEBAR
========================================================= */

.sidebar {

    width: 380px;

    min-width: 380px;

    display: flex;

    flex-direction: column;

    background: rgba(255, 255, 255, 0.68);

    border-right: 1px solid rgba(255, 255, 255, 0.8);

}


/* =========================================================
   BRAND
========================================================= */

.brand-header {

    display: flex;

    align-items: center;

    gap: 13px;

    padding: 24px;

}


.brand-logo {

    width: 48px;

    height: 48px;

    display: flex;

    justify-content: center;

    align-items: center;

    border-radius: 16px;

    background:

        linear-gradient(

            135deg,

            var(--deep-sky),

            var(--sky)

        );

    box-shadow:

        0 8px 20px

        rgba(39, 125, 161, 0.25);

}


.brand-logo img {

    width: 34px;

    height: 34px;

    object-fit: contain;

}


.brand-header h1 {

    font-size: 24px;

    letter-spacing: -0.5px;

}


.brand-header span {

    display: block;

    margin-top: 2px;

    color: var(--text-soft);

    font-size: 12px;

}


/* =========================================================
   UTILISATEUR CONNECTE
========================================================= */

.current-user-card {

    display: flex;

    align-items: center;

    gap: 12px;

    margin: 0 16px 16px;

    padding: 14px;

    border-radius: 18px;

    background: rgba(255, 255, 255, 0.72);

    box-shadow:

        0 8px 25px

        rgba(72, 128, 153, 0.08);

}


.current-user-avatar,

.chat-user-avatar {

    width: 48px;

    height: 48px;

    flex-shrink: 0;

    display: flex;

    justify-content: center;

    align-items: center;

    border-radius: 50%;

    color: white;

    font-weight: 700;

    font-size: 19px;

    background:

        linear-gradient(

            135deg,

            var(--deep-sky),

            var(--green)

        );

    overflow: hidden;

}


.current-user-avatar img,

.chat-user-avatar img {

    width: 100%;

    height: 100%;

    object-fit: cover;

}


.current-user-info {

    min-width: 0;

    flex: 1;

}


.current-user-info strong {

    display: block;

    white-space: nowrap;

    overflow: hidden;

    text-overflow: ellipsis;

}


.current-user-info small {

    display: block;

    margin-top: 3px;

    color: var(--text-soft);

    font-size: 11px;

    white-space: nowrap;

    overflow: hidden;

    text-overflow: ellipsis;

}


.online-indicator {

    width: 10px;

    height: 10px;

    border-radius: 50%;

    background: #52b788;

    box-shadow: 0 0 0 4px rgba(82, 183, 136, 0.15);

}


/* =========================================================
   NAVIGATION
========================================================= */

.messenger-navigation {

    display: flex;

    gap: 7px;

    padding: 0 16px 14px;

}


.navigation-button {

    flex: 1;

    border: none;

    padding: 10px 8px;

    border-radius: 12px;

    cursor: pointer;

    color: var(--text-soft);

    background: transparent;

    font-size: 11px;

    transition: 0.25s ease;

}


.navigation-button span {

    margin-right: 4px;

}


.navigation-button:hover {

    background: rgba(255, 255, 255, 0.6);

}


.navigation-button.active {

    color: var(--deep-sky);

    background: rgba(142, 202, 230, 0.22);

    font-weight: 600;

}


/* =========================================================
   RECHERCHE
========================================================= */

.search-box {

    position: relative;

    margin: 0 16px 14px;

}


.search-box input {

    width: 100%;

    border: 1px solid rgba(255, 255, 255, 0.8);

    outline: none;

    padding: 13px 16px 13px 42px;

    border-radius: 15px;

    color: var(--text);

    background: rgba(255, 255, 255, 0.65);

    transition: 0.25s ease;

}


.search-box input:focus {

    border-color: var(--sky);

    box-shadow:

        0 0 0 4px

        rgba(142, 202, 230, 0.16);

}


.search-icon {

    position: absolute;

    left: 16px;

    top: 10px;

    color: var(--text-soft);

    font-size: 21px;

}


/* =========================================================
   CONTACTS
========================================================= */

.contacts-list {

    flex: 1;

    overflow-y: auto;

    padding: 0 10px;

}


.contacts-list::-webkit-scrollbar,

.messages-area::-webkit-scrollbar {

    width: 5px;

}


.contacts-list::-webkit-scrollbar-thumb,

.messages-area::-webkit-scrollbar-thumb {

    background: rgba(39, 125, 161, 0.25);

    border-radius: 20px;

}


.contact-item {

    display: flex;

    align-items: center;

    gap: 12px;

    padding: 13px;

    margin-bottom: 5px;

    border-radius: 17px;

    cursor: pointer;

    transition:

        transform 0.2s ease,

        background 0.2s ease,

        box-shadow 0.2s ease;

}


.contact-item:hover {

    transform: translateX(3px);

    background: rgba(255, 255, 255, 0.72);

}


.contact-item.active {

    background: rgba(255, 255, 255, 0.88);

    box-shadow:

        0 8px 25px

        rgba(39, 125, 161, 0.10);

}


.contact-avatar {

    width: 50px;

    height: 50px;

    flex-shrink: 0;

    display: flex;

    justify-content: center;

    align-items: center;

    border-radius: 17px;

    color: white;

    font-size: 18px;

    font-weight: 700;

    overflow: hidden;

    background:

        linear-gradient(

            135deg,

            #8ecae6,

            #74c69d

        );

}


.contact-avatar img {

    width: 100%;

    height: 100%;

    object-fit: cover;

}


.contact-information {

    min-width: 0;

    flex: 1;

}


.contact-name {

    font-weight: 650;

    white-space: nowrap;

    overflow: hidden;

    text-overflow: ellipsis;

}


.contact-location {

    margin-top: 4px;

    color: var(--text-soft);

    font-size: 12px;

}


.contact-last-message {

    max-width: 130px;

    margin-top: 5px;

    color: #8a98a5;

    font-size: 11px;

    white-space: nowrap;

    overflow: hidden;

    text-overflow: ellipsis;

}


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

.sidebar-footer {

    display: flex;

    gap: 7px;

    align-items: center;

    padding: 14px 20px;

    color: var(--text-soft);

    font-size: 10px;

}


/* =========================================================
   ZONE CHAT
========================================================= */

.chat-section {

    flex: 1;

    min-width: 0;

    position: relative;

}


/* =========================================================
   ETAT VIDE
========================================================= */

.empty-conversation {

    height: 100%;

    display: flex;

    flex-direction: column;

    justify-content: center;

    align-items: center;

    padding: 30px;

    text-align: center;

}


.empty-illustration {

    position: relative;

    width: 190px;

    height: 190px;

    margin-bottom: 25px;

}


.chat-orbit {

    position: absolute;

    inset: 20px;

    display: flex;

    justify-content: center;

    align-items: center;

    border: 2px dashed rgba(39, 125, 161, 0.25);

    border-radius: 50%;

    animation: rotateOrbit 18s linear infinite;

}


.center-chat-icon {

    width: 80px;

    height: 80px;

    display: flex;

    justify-content: center;

    align-items: center;

    border-radius: 50%;

    color: white;

    font-size: 38px;

    background:

        linear-gradient(

            135deg,

            #277da1,

            #74c69d

        );

    box-shadow:

        0 15px 35px

        rgba(39, 125, 161, 0.25);

}


.orbit-dot {

    position: absolute;

    width: 13px;

    height: 13px;

    border-radius: 50%;

    background: var(--sun);

}


.orbit-dot:nth-child(1) {

    top: -6px;

    left: 50%;

}


.orbit-dot:nth-child(2) {

    right: 0;

    bottom: 25%;

}


.orbit-dot:nth-child(3) {

    left: 0;

    bottom: 25%;

}


.floating-bubble {

    position: absolute;

    display: flex;

    justify-content: center;

    align-items: center;

    width: 40px;

    height: 40px;

    border-radius: 14px;

    background: rgba(255, 255, 255, 0.75);

    box-shadow: 0 8px 20px rgba(50, 80, 100, 0.1);

}


.bubble-one {

    top: 0;

    right: 0;

    color: #f4a261;

}


.bubble-two {

    bottom: 5px;

    left: 0;

    color: #74c69d;

}


.empty-conversation h2 {

    line-height: 1.35;

    font-size: 26px;

}


.empty-conversation p {

    max-width: 400px;

    margin-top: 12px;

    color: var(--text-soft);

    line-height: 1.6;

}


@keyframes rotateOrbit {

    from {

        transform: rotate(0deg);

    }

    to {

        transform: rotate(360deg);

    }

}


/* =========================================================
   CHAT ACTIF
========================================================= */

.active-chat {

    height: 100%;

    display: none;

    flex-direction: column;

}


.active-chat.visible {

    display: flex;

}


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

.chat-header {

    height: 82px;

    flex-shrink: 0;

    display: flex;

    align-items: center;

    gap: 13px;

    padding: 15px 25px;

    background: rgba(255, 255, 255, 0.7);

    border-bottom: 1px solid rgba(255, 255, 255, 0.8);

}


.chat-user-avatar {

    width: 52px;

    height: 52px;

}


.chat-user-details {

    flex: 1;

}


.chat-user-details h2 {

    font-size: 17px;

}


.chat-user-details span {

    display: block;

    margin-top: 4px;

    color: var(--text-soft);

    font-size: 12px;

}


.chat-header-actions {

    display: flex;

    gap: 8px;

}


.chat-header-actions button {

    width: 38px;

    height: 38px;

    border: none;

    border-radius: 12px;

    cursor: pointer;

    color: var(--text-soft);

    background: rgba(255, 255, 255, 0.65);

    font-size: 20px;

}


.chat-header-actions button:hover {

    color: var(--deep-sky);

    background: white;

}


/* =========================================================
   MESSAGES
========================================================= */

.messages-area {

    flex: 1;

    overflow-y: auto;

    padding: 28px 7%;

    display: flex;

    flex-direction: column;

    gap: 10px;

}


.message-row {

    display: flex;

    width: 100%;

}


.message-row.mine {

    justify-content: flex-end;

}


.message-bubble {

    max-width: min(600px, 75%);

    padding: 12px 16px;

    border-radius: 20px;

    line-height: 1.5;

    font-size: 14px;

    white-space: pre-wrap;

    word-break: break-word;

    box-shadow:

        0 5px 15px

        rgba(60, 100, 120, 0.07);

}


.message-row.mine .message-bubble {

    border-bottom-right-radius: 5px;

    color: #234;

    background:

        linear-gradient(

            135deg,

            #d8f3dc,

            #b7e4c7

        );

}


.message-row.other .message-bubble {

    border-bottom-left-radius: 5px;

    background: rgba(255, 255, 255, 0.88);

}


.message-time {

    margin-top: 5px;

    text-align: right;

    color: rgba(70, 80, 90, 0.55);

    font-size: 10px;

}


/* =========================================================
   COMPOSER
========================================================= */

.message-composer {

    display: flex;

    align-items: flex-end;

    gap: 10px;

    padding: 16px 25px;

    background: rgba(255, 255, 255, 0.7);

    border-top: 1px solid rgba(255, 255, 255, 0.8);

}


.composer-button {

    width: 44px;

    height: 44px;

    flex-shrink: 0;

    border: none;

    border-radius: 14px;

    color: var(--deep-sky);

    cursor: pointer;

    background: rgba(142, 202, 230, 0.2);

    font-size: 20px;

}


.message-composer textarea {

    flex: 1;

    resize: none;

    max-height: 130px;

    min-height: 44px;

    padding: 12px 16px;

    border: 1px solid rgba(255, 255, 255, 0.9);

    border-radius: 18px;

    outline: none;

    color: var(--text);

    background: rgba(255, 255, 255, 0.8);

    font-family: inherit;

    font-size: 14px;

}


.message-composer textarea:focus {

    border-color: var(--sky);

    box-shadow:

        0 0 0 4px

        rgba(142, 202, 230, 0.15);

}


.send-button {

    width: 48px;

    height: 48px;

    flex-shrink: 0;

    border: none;

    border-radius: 16px;

    color: white;

    cursor: pointer;

    background:

        linear-gradient(

            135deg,

            #277da1,

            #74c69d

        );

    box-shadow:

        0 8px 20px

        rgba(39, 125, 161, 0.22);

    font-size: 20px;

    transition: 0.25s ease;

}


.send-button:hover {

    transform: translateY(-3px);

    box-shadow:

        0 12px 25px

        rgba(39, 125, 161, 0.3);

}


/* =========================================================
   MOBILE
========================================================= */

.mobile-back-button {

    display: none;

    border: none;

    background: transparent;

    color: var(--deep-sky);

    font-size: 25px;

    cursor: pointer;

}


.loading-state {

    display: flex;

    flex-direction: column;

    justify-content: center;

    align-items: center;

    gap: 12px;

    padding: 40px 20px;

    color: var(--text-soft);

    font-size: 13px;

}


.loader {

    width: 28px;

    height: 28px;

    border: 3px solid rgba(39, 125, 161, 0.15);

    border-top-color: var(--deep-sky);

    border-radius: 50%;

    animation: spin 0.8s linear infinite;

}


@keyframes spin {

    to {

        transform: rotate(360deg);

    }

}


.no-results {

    padding: 30px;

    text-align: center;

    color: var(--text-soft);

    font-size: 13px;

}


@media (max-width: 850px) {

    .lumina-messenger {

        width: 100vw;

        height: 100vh;

        margin: 0;

        border-radius: 0;

    }

    .sidebar {

        width: 100%;

        min-width: 100%;

    }

    .chat-section {

        display: none;

    }

    .lumina-messenger.chat-open .sidebar {

        display: none;

    }

    .lumina-messenger.chat-open .chat-section {

        display: block;

        width: 100%;

    }

    .mobile-back-button {

        display: block;

    }

    .messages-area {

        padding: 20px 15px;

    }

    .message-bubble {

        max-width: 85%;

    }

}