/* Koshey AI — Military Style CSS */
* { margin:0; padding:0; box-sizing:border-box; }
:root {
    --bg-dark: #0a0d06;
    --bg-card: #141a0b;
    --bg-input: #1a2110;
    --border: #2a3520;
    --gold: #c9a84c;
    --gold-dim: #8a7433;
    --red: #8b1a1a;
    --green: #3a5a28;
    --text: #d4d4c8;
    --text-muted: #7a7a6a;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Roboto', sans-serif;
}
body { 
    font-family: var(--font-body); 
    color: var(--text); 
    background: var(--bg-dark);
    height: 100vh;
    overflow: hidden;
}

/* Auth Page */
.auth-bg {
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0d06 0%, #121a0a 40%, #0d120a 100%);
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.auth-bg::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 30%, rgba(201,168,76,0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 70%, rgba(58,90,40,0.08) 0%, transparent 50%);
}
.auth-particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
    position: absolute; border-radius: 50%;
    background: rgba(201,168,76,0.3);
    animation: float linear infinite;
}
@keyframes float {
    0% { transform: translateY(0) scale(1); opacity:0; }
    20% { opacity:1; }
    80% { opacity:1; }
    100% { transform: translateY(-100vh) scale(0); opacity:0; }
}
.auth-container { position: relative; z-index: 1; width: 100%; max-width: 420px; padding: 20px; }
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px rgba(201,168,76,0.05);
    overflow: hidden;
}
.auth-header {
    text-align: center; padding: 40px 30px 20px;
    background: linear-gradient(180deg, rgba(201,168,76,0.08) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
}
.auth-logo {
    display: inline-flex; align-items: center; justify-content: center;
    width: 80px; height: 80px; border-radius: 50%;
    background: linear-gradient(135deg, var(--green) 0%, #2a4020 100%);
    border: 2px solid var(--gold);
    color: var(--gold); margin-bottom: 16px;
    box-shadow: 0 0 20px rgba(201,168,76,0.2);
}
.auth-logo img { width: 48px; height: 48px; }
.auth-header h1 {
    font-family: var(--font-heading); font-size: 28px; font-weight: 700;
    letter-spacing: 4px; color: var(--gold);
    text-shadow: 0 2px 10px rgba(201,168,76,0.3);
}
.auth-tabs { display: flex; border-bottom: 1px solid var(--border); }
.auth-tab {
    flex: 1; padding: 15px; text-align: center;
    font-family: var(--font-heading); font-size: 14px; font-weight: 500;
    letter-spacing: 2px; text-transform: uppercase;
    color: var(--text-muted); cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}
.auth-tab.active { color: var(--gold); border-bottom-color: var(--gold); }
.auth-tab:hover { color: var(--text); }
.auth-form { display: none; padding: 30px; }
.auth-form.active { display: block; }
.auth-error {
    background: rgba(139,26,26,0.2); border: 1px solid rgba(139,26,26,0.5);
    color: #e05050; padding: 10px 14px; border-radius: 4px;
    font-size: 13px; margin-bottom: 16px; text-align: center;
    display: none;
}
.auth-error.show { display: block; }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-family: var(--font-heading); font-size: 13px;
    font-weight: 500; letter-spacing: 2px; text-transform: uppercase;
    color: var(--gold-dim); margin-bottom: 8px;
}
.input-wrap {
    position: relative; display: flex; align-items: center;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: 4px; transition: border-color 0.2s, box-shadow 0.2s;
}
.input-wrap:focus-within {
    border-color: var(--gold-dim);
    box-shadow: 0 0 0 2px rgba(201,168,76,0.1);
}
.input-wrap svg {
    position: absolute; left: 12px; width: 18px; height: 18px;
    color: var(--text-muted); pointer-events: none;
}
.input-wrap input {
    flex: 1; background: none; border: none; outline: none;
    color: var(--text); font-family: var(--font-body); font-size: 15px;
    padding: 12px 14px 12px 42px;
}
.input-wrap input::placeholder { color: var(--text-muted); font-size: 14px; }
.input-wrap input:-webkit-autofill,
.input-wrap input:-webkit-autofill:hover,
.input-wrap input:-webkit-autofill:focus {
    -webkit-text-fill-color: var(--text);
    -webkit-box-shadow: 0 0 0px 1000px var(--bg-input) inset;
    transition: background-color 5000s ease-in-out 0s;
}

/* Captcha */
.captcha-row { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 8px; }
.captcha-chip {
    display: flex; align-items: center; gap: 4px;
    background: rgba(201,168,76,0.06); border: 1px solid rgba(201,168,76,0.2);
    border-radius: 6px; padding: 10px 14px; user-select: none;
}
.captcha-chip .num { font-family: 'JetBrains Mono', monospace; font-size: 16px; font-weight: 600; color: #c9a84c; }
.captcha-chip .op { font-family: 'JetBrains Mono', monospace; font-size: 14px; color: #7a7a6a; margin: 0 2px; }
.captcha-chip .eq { font-size: 14px; color: #7a7a6a; margin-left: 4px; }
.captcha-input {
    width: 56px; padding: 10px 8px; background: #1a2110; border: 1px solid #2a3520;
    border-radius: 5px; color: #c9a84c; font-size: 16px; font-weight: 600;
    font-family: 'JetBrains Mono', monospace; text-align: center; outline: none; transition: border-color 0.2s;
}
.captcha-input:focus { border-color: #c9a84c; box-shadow: 0 0 0 2px rgba(201,168,76,0.1); }
.captcha-refresh {
    padding: 10px; background: transparent; border: 1px solid var(--border);
    border-radius: 4px; color: var(--text-muted); cursor: pointer;
    transition: all 0.2s;
}
.captcha-refresh:hover { border-color: var(--gold); color: var(--gold); }

/* Buttons */
.btn-auth {
    width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px; border: 1px solid var(--gold);
    background: linear-gradient(135deg, rgba(201,168,76,0.15) 0%, rgba(201,168,76,0.05) 100%);
    color: var(--gold); font-family: var(--font-heading); font-size: 16px;
    font-weight: 600; letter-spacing: 3px; text-transform: uppercase;
    border-radius: 4px; cursor: pointer; transition: all 0.3s; margin-top: 10px;
}
.btn-auth:hover {
    background: linear-gradient(135deg, rgba(201,168,76,0.25) 0%, rgba(201,168,76,0.1) 100%);
    box-shadow: 0 0 20px rgba(201,168,76,0.2);
    transform: translateY(-1px);
}
.btn-auth:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-auth .spinner {
    width: 18px; height: 18px; border: 2px solid var(--gold-dim);
    border-radius: 50%; border-top-color: var(--gold);
    animation: spin 1s linear infinite; display: none;
}
.btn-auth.loading .spinner { display: block; }
.btn-auth.loading .btn-text { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.auth-footer {
    text-align: center; padding: 16px; border-top: 1px solid var(--border);
    font-size: 12px; color: var(--text-muted);
}
.auth-footer a { color: var(--gold); text-decoration: none; }

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
}
.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(201,168,76,0.08) 0%, transparent 100%);
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--green) 0%, #2a4020 100%);
    border: 2px solid var(--gold);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.logo-icon img { width: 24px; height: 24px; }
.logo-text {
    font-family: var(--font-heading);
    font-size: 18px; font-weight: 600;
    color: var(--gold); letter-spacing: 2px;
}
.new-chat-btn {
    margin: 16px 24px; padding: 12px;
    background: linear-gradient(135deg, rgba(201,168,76,0.15) 0%, rgba(201,168,76,0.05) 100%);
    border: 1px solid var(--gold); color: var(--gold);
    border-radius: 4px; font-family: var(--font-heading);
    font-size: 13px; font-weight: 500;
    letter-spacing: 2px; text-transform: uppercase;
    cursor: pointer; transition: all 0.3s;
}
.new-chat-btn:hover {
    background: linear-gradient(135deg, rgba(201,168,76,0.25) 0%, rgba(201,168,76,0.1) 100%);
    box-shadow: 0 0 15px rgba(201,168,76,0.2);
}
.chat-list { flex: 1; overflow-y: auto; padding: 8px 12px; }
.chat-item {
    padding: 12px 16px; border-radius: 4px;
    cursor: pointer; margin-bottom: 4px;
    font-size: 13px; color: var(--text-muted);
    transition: all 0.2s; display: flex;
    justify-content: space-between; align-items: center;
    border: 1px solid transparent;
}
.chat-item:hover {
    background: rgba(201,168,76,0.05);
    border-color: var(--border); color: var(--text);
}
.chat-item.active {
    background: rgba(201,168,76,0.1);
    border-color: var(--gold-dim); color: var(--gold);
}
.chat-item-title {
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; flex: 1;
}
.chat-item-delete {
    opacity: 0; color: var(--text-muted);
    cursor: pointer; padding: 4px 8px;
    transition: opacity 0.2s;
}
.chat-item:hover .chat-item-delete { opacity: 1; }
.sidebar-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.user-info { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.user-avatar {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, var(--green) 0%, #2a4020 100%);
    border: 1px solid var(--gold-dim);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
}
.user-name { font-size: 13px; font-weight: 500; color: var(--text); }
.user-role {
    font-size: 11px; color: var(--gold-dim);
    font-family: var(--font-heading); letter-spacing: 1px;
}
.token-balance {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 12px; background: var(--bg-input);
    border: 1px solid var(--border); border-radius: 4px;
    margin-bottom: 8px; font-size: 12px;
}
.token-balance .label { color: var(--text-muted); }
.token-balance .value {
    color: var(--gold); font-weight: 600;
    font-family: var(--font-heading);
}
.model-select {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: 4px; color: var(--text);
    font-size: 12px; font-family: var(--font-body);
    margin-bottom: 8px; cursor: pointer;
}
.model-select:focus { outline: none; border-color: var(--gold-dim); }
.sidebar-btn {
    width: 100%; padding: 10px;
    background: transparent; border: 1px solid var(--border);
    border-radius: 4px; color: var(--text-muted);
    font-size: 12px; font-family: var(--font-heading);
    letter-spacing: 1px; cursor: pointer;
    margin-bottom: 6px; transition: all 0.2s;
}
.sidebar-btn:hover { border-color: var(--gold-dim); color: var(--gold); }
.sidebar-btn.buy {
    background: linear-gradient(135deg, rgba(201,168,76,0.15) 0%, rgba(201,168,76,0.05) 100%);
    border-color: var(--gold); color: var(--gold);
}
.sidebar-btn.logout { color: var(--red); border-color: transparent; }

/* Main */
.main { margin-left: 260px; height: 100vh; display: flex; flex-direction: column; }
.chat-header {
    padding: 16px 24px; border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
    background: var(--bg-card);
}
.chat-title {
    font-family: var(--font-heading); font-size: 16px;
    font-weight: 500; color: var(--gold); letter-spacing: 1px;
}
.header-right { display: flex; align-items: center; gap: 16px; }
.status {
    font-size: 11px; color: var(--green);
    font-family: var(--font-heading); letter-spacing: 1px;
}

/* Messages */
.messages { flex: 1; overflow-y: auto; padding: 24px; background: var(--bg-dark); }
.message { margin-bottom: 24px; display: flex; gap: 16px; }
.message.user { flex-direction: row-reverse; }
.avatar {
    width: 36px; height: 36px; border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; flex-shrink: 0; border: 1px solid var(--border);
}
.message.user .avatar { background: var(--bg-input); border-color: var(--gold-dim); }
.message.assistant .avatar { 
    background: linear-gradient(135deg, var(--green) 0%, #2a4020 100%);
    border-color: var(--gold); padding: 4px;
}
.message.assistant .avatar img { width: 100%; height: 100%; }
.message-content { max-width: 70%; }
.message-bubble { padding: 16px 20px; border-radius: 4px; font-size: 14px; line-height: 1.7; }
.message.user .message-bubble { background: var(--bg-input); border: 1px solid var(--border); }
.message.assistant .message-bubble { background: var(--bg-card); border: 1px solid var(--border); }
.message-time { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.message.user .message-time { text-align: right; }

/* Input */
.input-area { padding: 16px 24px; border-top: 1px solid var(--border); background: var(--bg-card); }
.input-wrapper { display: flex; gap: 12px; align-items: center; }
#messageInput {
    flex: 1; padding: 14px 16px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: 4px; color: var(--text);
    font-size: 14px; font-family: var(--font-body);
    resize: none; outline: none; max-height: 120px;
}
#messageInput:focus { border-color: var(--gold-dim); }
#messageInput::placeholder { color: var(--text-muted); }
.send-btn {
    padding: 14px 24px;
    background: linear-gradient(135deg, rgba(201,168,76,0.15) 0%, rgba(201,168,76,0.05) 100%);
    border: 1px solid var(--gold); border-radius: 4px;
    color: var(--gold); font-family: var(--font-heading);
    font-size: 13px; font-weight: 500;
    letter-spacing: 2px; text-transform: uppercase;
    cursor: pointer; transition: all 0.3s;
}
.send-btn:hover {
    background: linear-gradient(135deg, rgba(201,168,76,0.25) 0%, rgba(201,168,76,0.1) 100%);
    box-shadow: 0 0 15px rgba(201,168,76,0.2);
}
.input-hint {
    text-align: center; font-size: 11px;
    color: var(--text-muted); margin-top: 8px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }