:root {
    --bg-top: #f6efe6;
    --bg-bottom: #dfeaf2;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-strong: #ffffff;
    --surface-dark: #23313f;
    --ink: #17202a;
    --ink-soft: #536172;
    --line: rgba(23, 32, 42, 0.1);
    --primary: #1f6f78;
    --primary-strong: #16545b;
    --accent: #ed8b66;
    --accent-strong: #d96e46;
    --danger: #c34d46;
    --danger-soft: #fff1ef;
    --shadow-lg: 0 26px 60px rgba(24, 35, 52, 0.16);
    --shadow-md: 0 14px 36px rgba(24, 35, 52, 0.12);
    --radius-xl: 32px;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    color: var(--ink);
    font-family: "Inter", "Noto Sans KR", sans-serif;
    background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
}

.ambient-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at top left, rgba(237, 139, 102, 0.18), transparent 32%),
        radial-gradient(circle at top right, rgba(31, 111, 120, 0.16), transparent 28%),
        radial-gradient(circle at bottom center, rgba(255, 255, 255, 0.45), transparent 40%);
}

a {
    color: inherit;
}

button,
input,
textarea {
    font: inherit;
}

.auth-shell,
.dashboard-shell,
.chat-shell {
    position: relative;
    z-index: 1;
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
}

.auth-card,
.panel-card,
.chat-panel {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
}

.auth-card,
.panel-card {
    width: min(100%, 560px);
    border-radius: var(--radius-xl);
    padding: 30px;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--primary);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;
}

.brand-mark__dot {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    box-shadow: 0 0 0 6px rgba(31, 111, 120, 0.12);
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.page-title {
    margin: 0;
    font-size: clamp(1.9rem, 5vw, 2.4rem);
    line-height: 1.08;
    font-weight: 800;
}

.page-subtitle {
    margin: 12px 0 0;
    color: var(--ink-soft);
    line-height: 1.6;
    font-size: 0.96rem;
}

.page-header {
    margin-bottom: 28px;
}

.form-stack {
    display: grid;
    gap: 16px;
}

.form-field {
    display: grid;
    gap: 8px;
}

.field-label {
    font-size: 0.88rem;
    font-weight: 700;
}

.form-field input,
.form-field select,
.form-field textarea,
.app-input {
    width: 100%;
    border: 1px solid var(--line);
    background: var(--surface-strong);
    border-radius: 16px;
    padding: 14px 16px;
    color: var(--ink);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus,
.app-input:focus {
    outline: none;
    border-color: rgba(31, 111, 120, 0.38);
    box-shadow: 0 0 0 4px rgba(31, 111, 120, 0.12);
}

.field-help {
    color: var(--ink-soft);
    font-size: 0.78rem;
    line-height: 1.55;
}

.field-error {
    color: var(--danger);
    font-size: 0.82rem;
    font-weight: 600;
}

.feedback-box {
    border-radius: 16px;
    padding: 12px 14px;
    font-size: 0.9rem;
    border: 1px solid rgba(195, 77, 70, 0.15);
    background: var(--danger-soft);
    color: var(--danger);
}

.button-row {
    display: grid;
    gap: 10px;
    margin-top: 10px;
}

.btn-app,
.btn-app-secondary,
.btn-app-ghost,
.btn-chip,
.btn-tiny {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: none;
    border-radius: 999px;
    padding: 14px 18px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    word-break: keep-all;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-app:hover,
.btn-app-secondary:hover,
.btn-app-ghost:hover,
.btn-chip:hover,
.btn-tiny:hover {
    transform: translateY(-1px);
}

.btn-app {
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #ffffff;
    box-shadow: 0 12px 24px rgba(31, 111, 120, 0.22);
}

.btn-app-secondary {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #ffffff;
    box-shadow: 0 12px 24px rgba(237, 139, 102, 0.22);
}

.btn-app-ghost,
.btn-tiny,
.btn-chip {
    background: rgba(255, 255, 255, 0.8);
    color: var(--ink);
    border: 1px solid var(--line);
}

.inline-note {
    margin-top: 18px;
    color: var(--ink-soft);
    text-align: center;
    font-size: 0.9rem;
}

.inline-note a {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.dashboard-shell {
    max-width: 720px;
    margin: 0 auto;
    padding: 22px 14px 28px;
}

.dashboard-panel {
    width: 100%;
    border-radius: 34px;
    overflow: hidden;
}

.dashboard-header {
    padding: 26px 24px 18px;
    border-bottom: 1px solid var(--line);
}

.dashboard-topline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.dashboard-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.icon-circle {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.logout-form {
    margin: 0;
}

.count-pill,
.unread-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    padding: 3px 9px;
    border-radius: 999px;
    background: var(--accent);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 800;
}

.segmented-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin: 0;
    border: none;
}

.segmented-tabs .nav-link {
    border: none !important;
    border-radius: 999px !important;
    padding: 12px 16px;
    font-weight: 700;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.62);
}

.segmented-tabs .nav-link.active {
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong)) !important;
    box-shadow: 0 10px 20px rgba(31, 111, 120, 0.2);
}

.dashboard-body {
    padding: 12px;
}

.item-list {
    display: grid;
    gap: 10px;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.75);
    background: rgba(255, 255, 255, 0.75);
    box-shadow: 0 12px 28px rgba(24, 35, 52, 0.08);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.list-item--interactive {
    cursor: pointer;
}

.list-item--interactive:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(24, 35, 52, 0.1);
}

.avatar-badge {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(31, 111, 120, 0.16), rgba(237, 139, 102, 0.18));
    color: var(--primary);
    font-size: 1.1rem;
}

.item-main {
    min-width: 0;
    flex: 1;
}

.item-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.item-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.item-subtitle {
    margin-top: 4px;
    color: var(--ink-soft);
    font-size: 0.88rem;
}

.item-meta {
    color: var(--ink-soft);
    font-size: 0.8rem;
    white-space: nowrap;
}

.status-note {
    margin-left: 6px;
    color: var(--ink-soft);
    font-size: 0.78rem;
    font-weight: 600;
}

.empty-state {
    padding: 56px 20px;
    text-align: center;
    color: var(--ink-soft);
}

.modal-content {
    border: none;
    border-radius: 26px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--line);
    padding: 22px 24px 18px;
}

.modal-body {
    padding: 22px 24px 24px;
}

.chat-shell {
    min-height: 100vh;
    padding: 18px 12px;
    display: block;
}

.chat-panel {
    max-width: 680px;
    width: 100%;
    margin: 0 auto;
    border-radius: 34px;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.chat-header {
    position: sticky;
    top: 12px;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 18px 16px;
    background: rgba(255, 255, 255, 0.78);
    border-bottom: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 34px 34px 0 0;
    box-shadow: 0 12px 24px rgba(24, 35, 52, 0.12);
}

.icon-button {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border: none;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-md);
    font-size: 1.15rem;
}

.chat-title-group {
    min-width: 0;
    flex: 1;
}

.chat-title {
    margin: 0;
    font-size: 1.08rem;
    font-weight: 800;
}

.chat-subtitle {
    margin: 4px 0 0;
    color: var(--ink-soft);
    font-size: 0.84rem;
}

.chat-area {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px 16px;
    background:
        linear-gradient(180deg, rgba(31, 111, 120, 0.06), rgba(237, 139, 102, 0.02)),
        rgba(35, 49, 63, 0.97);
}

.message-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 7px;
    max-width: 88%;
}

.incoming-wrapper {
    align-self: flex-start;
}

.outgoing-wrapper {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-content {
    max-width: 100%;
}

.message-sender {
    display: block;
    margin-bottom: 4px;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.76rem;
}

.bubble {
    display: inline-block;
    max-width: 100%;
    padding: 12px 14px;
    border-radius: 20px;
    line-height: 1.5;
    word-break: break-word;
    box-shadow: 0 12px 28px rgba(7, 15, 23, 0.24);
}

.incoming .bubble {
    background: rgba(255, 255, 255, 0.93);
    color: var(--ink);
    border-top-left-radius: 6px;
}

.outgoing .bubble {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #ffffff;
    border-top-right-radius: 6px;
}

.time-text {
    color: rgba(255, 255, 255, 0.66);
    font-size: 0.7rem;
    white-space: nowrap;
}

.chat-img {
    max-width: min(240px, 100%);
    border-radius: 16px;
    display: block;
    margin-top: 4px;
    cursor: pointer;
}

.input-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px 18px;
    background: rgba(255, 255, 255, 0.78);
    border-top: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 0 0 34px 34px;
}

.image-plus {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: rgba(31, 111, 120, 0.12);
    color: var(--primary);
    font-size: 1.4rem;
    cursor: pointer;
}

#chat-message-input {
    flex: 1;
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 13px 16px;
    background: rgba(255, 255, 255, 0.95);
}

#chat-message-submit {
    border: none;
    border-radius: 999px;
    padding: 13px 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 12px 20px rgba(31, 111, 120, 0.2);
}

@media (max-width: 640px) {
    .auth-card,
    .panel-card {
        width: 100%;
        padding: 24px 20px;
        border-radius: 26px;
    }

    .dashboard-shell,
    .chat-shell {
        padding: 12px;
    }

    .dashboard-header {
        padding: 22px 18px 16px;
    }

    .dashboard-topline {
        flex-direction: column;
    }

    .dashboard-actions {
        width: 100%;
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .chat-panel {
        border-radius: 0;
    }

    .chat-header {
        top: 0;
        border-radius: 0;
    }

    .input-bar {
        border-radius: 0;
    }
}