/* =========================
   Kirti AI v2 — Base
========================= */

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

:root {
    --primary: #1f5eff;
    --primary-dark: #1748c7;
    --background: #eef3f8;
    --surface: #ffffff;
    --header: #0f172a;
    --text: #172033;
    --muted: #7b8497;
    --border: #e5eaf1;
    --bot-bubble: #f1f4f8;
    --user-bubble: #1f5eff;
    --success: #22c55e;
    --shadow: 0 18px 50px rgba(15, 23, 42, 0.14);
}

html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    min-height: 100vh;
    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Arial,
        sans-serif;
    background:
        radial-gradient(
            circle at top left,
            rgba(31, 94, 255, 0.12),
            transparent 34%
        ),
        var(--background);
    color: var(--text);
}


/* =========================
   App Layout
========================= */

.chat-app {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.chat-container {
    width: min(100%, 430px);
    height: min(760px, calc(100vh - 48px));
    min-height: 560px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 24px;
    box-shadow: var(--shadow);
}


/* =========================
   Header
========================= */

.chat-header {
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    background: var(--header);
    color: #ffffff;
}

.assistant-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.assistant-avatar,
.message-avatar,
.typing-avatar {
    flex-shrink: 0;
    overflow: hidden;
    border-radius: 50%;
    background: #ffffff;
}

.assistant-avatar {
    width: 48px;
    height: 48px;
    padding: 3px;
}

.assistant-avatar img,
.message-avatar img,
.typing-avatar img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: inherit;
}

.assistant-info h1 {
    font-size: 17px;
    line-height: 1.2;
    font-weight: 700;
}

.assistant-status {
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.75);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.14);
}

.header-button {
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    font-size: 22px;
    cursor: pointer;
    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

.header-button:hover {
    background: rgba(255, 255, 255, 0.16);
}

.header-button:active {
    transform: scale(0.95);
}


/* =========================
   Messages Area
========================= */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 22px 16px 14px;
    background: #ffffff;
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 5px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #d6dce6;
    border-radius: 999px;
}

.message-row {
    width: 100%;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 18px;
}

.bot-row {
    justify-content: flex-start;
}

.user-row {
    justify-content: flex-end;
}

.message-avatar,
.typing-avatar {
    width: 30px;
    height: 30px;
    padding: 2px;
    border: 1px solid var(--border);
}

.message-content {
    max-width: 72%;
    display: flex;
    flex-direction: column;
}

.user-row .message-content {
    align-items: flex-end;
}

.message-bubble {
    padding: 11px 14px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.55;
    overflow-wrap: anywhere;
    white-space: normal;
}

.bot-message {
    background: var(--bot-bubble);
    color: var(--text);
    border-bottom-left-radius: 6px;
}

.user-message {
    background: var(--user-bubble);
    color: #ffffff;
    border-bottom-right-radius: 6px;
}

.message-time {
    margin-top: 5px;
    padding: 0 4px;
    font-size: 10px;
    color: var(--muted);
}


/* =========================
   Typing Indicator
========================= */

.typing-indicator {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 0 16px 12px;
    background: #ffffff;
}

.typing-bubble {
    min-width: 58px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border-radius: 18px 18px 18px 6px;
    background: var(--bot-bubble);
}

.typing-bubble span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #8993a5;
    animation: typing 1.2s infinite ease-in-out;
}

.typing-bubble span:nth-child(2) {
    animation-delay: 0.15s;
}

.typing-bubble span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes typing {
    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: 0.45;
    }

    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

.hidden {
    display: none !important;
}


/* =========================
   Input Area
========================= */

.chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    padding: 12px 14px;
    background: #ffffff;
    border-top: 1px solid var(--border);
}

.message-input {
    flex: 1;
    min-height: 44px;
    max-height: 120px;
    resize: none;
    overflow-y: auto;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: 16px;
    outline: none;
    background: #f8fafc;
    color: var(--text);
    font: inherit;
    font-size: 14px;
    line-height: 1.5;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        background 0.2s ease;
}

.message-input::placeholder {
    color: #9aa3b2;
}

.message-input:focus {
    background: #ffffff;
    border-color: rgba(31, 94, 255, 0.55);
    box-shadow: 0 0 0 3px rgba(31, 94, 255, 0.1);
}

.send-button {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 14px;
    background: var(--primary);
    color: #ffffff;
    cursor: pointer;
    transition:
        background 0.2s ease,
        transform 0.2s ease,
        opacity 0.2s ease;
}

.send-button span {
    display: block;
    font-size: 17px;
    transform: translateX(1px);
}

.send-button:hover {
    background: var(--primary-dark);
}

.send-button:active {
    transform: scale(0.95);
}

.send-button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}


/* =========================
   Footer
========================= */

.chat-footer {
    padding: 8px 12px 10px;
    background: #ffffff;
    color: var(--muted);
    text-align: center;
    font-size: 10px;
}


/* =========================
   Responsive
========================= */

@media (max-width: 520px) {
    body {
        background: #ffffff;
    }

    .chat-app {
        padding: 0;
    }

    .chat-container {
        width: 100%;
        height: 100dvh;
        min-height: 100dvh;
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .chat-header {
        min-height: 76px;
        padding:
            max(14px, env(safe-area-inset-top))
            16px
            14px;
    }

    .chat-messages {
        padding: 18px 12px 12px;
    }

    .message-content {
        max-width: 82%;
    }

    .chat-input-area {
        padding: 10px 12px;
    }

    .chat-footer {
        padding-bottom:
            max(8px, env(safe-area-inset-bottom));
    }
}
/* =========================
   Send Button Loading
========================= */

.send-button.loading {
    pointer-events: none;
    opacity: .8;
}

.send-button.loading span {
    display: none;
}

.send-button.loading::after {

    content: "";

    width: 18px;
    height: 18px;

    border-radius: 50%;

    border: 2px solid rgba(255,255,255,.4);
    border-top-color:#fff;

    animation: spin .8s linear infinite;

}

@keyframes spin{

    to{

        transform:rotate(360deg);

    }

}


/* =========================
   Smooth Fade
========================= */

.message-row{

    animation:fadeMessage .25s ease;

}

@keyframes fadeMessage{

    from{

        opacity:0;

        transform:translateY(10px);

    }

    to{

        opacity:1;

        transform:translateY(0);

    }

}