@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    /* EASmart brand colors */
    --ea-blue:       #0277BD;
    --ea-blue-dark:  #075685;
    --ea-blue-dim:   #67ADD7;
    --ea-green:      #00cc44;
    --ea-red:        #E60000;
    --ea-orange:     #FAC085;

    /* Dark theme built on brand blue */
    --bg-primary:    #060d14;
    --bg-secondary:  #0b1825;
    --bg-card:       #0f2030;
    --bg-card-hover: #132840;
    --border:        rgba(2,119,189,0.18);
    --accent:        #0277BD;
    --accent-dark:   #075685;
    --accent-glow:   rgba(2,119,189,0.28);
    --success:       #00cc44;
    --success-dark:  #009933;
    --danger:        #ff3333;
    --danger-dark:   #cc0000;
    --warning:       #FAC085;
    --text-primary:  #e8f4fc;
    --text-secondary:#6fa8c8;
    --text-muted:    #2d5a7a;
    --radius:        16px;
    --radius-sm:     10px;
    --shadow:        0 4px 24px rgba(0,0,0,0.5);
    --transition:    0.2s ease;
}

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

/* ─── AUTH PAGES ─── */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: radial-gradient(ellipse at 50% 0%, rgba(2,119,189,0.2) 0%, transparent 65%),
                var(--bg-primary);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: var(--shadow);
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo .logo-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--ea-blue), var(--ea-blue-dark));
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 14px;
    box-shadow: 0 8px 24px var(--accent-glow);
}

.auth-logo h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.auth-logo p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ─── FORM ─── */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder { color: var(--text-muted); }

/* ─── BUTTONS ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn-block { width: 100%; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-success { background: var(--success); color: #0a1a10; }
.btn-success:hover { background: var(--success-dark); transform: translateY(-1px); }
.btn-danger  { background: var(--danger);  color: #1a0a0a; }
.btn-danger:hover  { background: var(--danger-dark);  transform: translateY(-1px); }
.btn-ghost  { background: rgba(255,255,255,0.06); color: var(--text-primary); border: 1px solid var(--border); }
.btn-ghost:hover  { background: rgba(255,255,255,0.1); }
.btn-icon   { width: 40px; height: 40px; padding: 0; border-radius: 50%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }
.btn:active { transform: scale(0.97) !important; }

/* ─── ALERTS ─── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    font-weight: 500;
}
.alert-error   { background: rgba(248,113,113,0.12); border: 1px solid rgba(248,113,113,0.3); color: #fca5a5; }
.alert-success { background: rgba(52,211,153,0.12);  border: 1px solid rgba(52,211,153,0.3);  color: #6ee7b7; }
.alert-info    { background: rgba(91,141,238,0.12);  border: 1px solid rgba(91,141,238,0.3);  color: #93c5fd; }

/* ─── AUTH LINK ─── */
.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-secondary);
}
.auth-footer a { color: var(--accent); text-decoration: none; font-weight: 500; }
.auth-footer a:hover { text-decoration: underline; }

/* ─── APP LAYOUT ─── */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
}

/* ─── TOP BAR ─── */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(17,24,39,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 16px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar-back {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
    text-decoration: none;
    transition: background var(--transition);
    font-size: 18px;
}
.topbar-back:hover { background: rgba(255,255,255,0.12); }

.topbar-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-user {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ─── PAGE CONTENT ─── */
.page-content {
    flex: 1;
    padding: 20px 16px;
}

/* ─── DEVICE GRID ─── */
.device-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.device-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    position: relative;
}

.device-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(91,141,238,0.3);
    transform: translateY(-1px);
}

.device-card:active { transform: scale(0.98); }

.device-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: #ffffff;
}

.device-icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.device-info {
    flex: 1;
    min-width: 0;
}

.device-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.device-type {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.device-trigger-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
    font-size: 18px;
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-glow);
}
.device-trigger-btn:hover { background: var(--accent-dark); transform: scale(1.08); }
.device-trigger-btn:active { transform: scale(0.94); }
.device-trigger-btn.loading { animation: pulse 1s infinite; }
.device-trigger-btn.success { background: var(--success); box-shadow: 0 2px 10px rgba(52,211,153,0.35); }
.device-trigger-btn.error   { background: var(--danger);  box-shadow: 0 2px 10px rgba(248,113,113,0.35); }

/* ─── EMPTY STATE ─── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}
.empty-state .empty-icon {
    font-size: 56px;
    margin-bottom: 16px;
    display: block;
    filter: grayscale(0.3);
}
.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ─── MODAL ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    width: 100%;
    max-width: 480px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 28px 24px 40px;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-handle {
    width: 40px;
    height: 4px;
    background: rgba(255,255,255,0.15);
    border-radius: 2px;
    margin: 0 auto 24px;
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

/* ─── DEVICE DETAIL ─── */
.device-detail-header {
    text-align: center;
    padding: 28px 20px 20px;
}

.device-detail-icon {
    width: 80px;
    height: 80px;
    border-radius: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.device-detail-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.device-detail-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.device-detail-type {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.device-detail-key {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    letter-spacing: 0.5px;
}

/* ─── CONTROL PANEL ─── */
.control-panel {
    padding: 8px 16px 24px;
}

.control-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 12px;
}

.control-buttons {
    display: grid;
    gap: 10px;
}

.control-buttons.cols-2 { grid-template-columns: 1fr 1fr; }
.control-buttons.cols-1 { grid-template-columns: 1fr; }

.control-btn {
    padding: 18px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.control-btn .btn-icon-large { font-size: 26px; }
.control-btn .btn-label { font-size: 13px; font-weight: 600; }

.control-btn:hover {
    border-color: rgba(91,141,238,0.4);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.control-btn:active { transform: scale(0.96); }

.control-btn.btn-primary { border-color: rgba(91,141,238,0.4); background: rgba(91,141,238,0.1); }
.control-btn.btn-primary:hover { background: rgba(91,141,238,0.2); }
.control-btn.btn-success { border-color: rgba(52,211,153,0.4); background: rgba(52,211,153,0.08); }
.control-btn.btn-success:hover { background: rgba(52,211,153,0.15); }
.control-btn.btn-danger  { border-color: rgba(248,113,113,0.4); background: rgba(248,113,113,0.08); }
.control-btn.btn-danger:hover  { background: rgba(248,113,113,0.15); }

.control-btn.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.04);
    animation: ripple 0.8s ease infinite;
}

.control-btn.sent {
    border-color: rgba(52,211,153,0.6) !important;
    background: rgba(52,211,153,0.15) !important;
}

/* ─── TOAST ─── */
.toast-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    pointer-events: none;
}

.toast {
    background: #1e2a42;
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    animation: toastIn 0.3s ease forwards;
    white-space: nowrap;
}
.toast.toast-success { border-color: rgba(52,211,153,0.4); color: #6ee7b7; }
.toast.toast-error   { border-color: rgba(248,113,113,0.4); color: #fca5a5; }

/* ─── LOADING SPINNER ─── */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.15);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}

/* ─── DIVIDER ─── */
.divider {
    height: 1px;
    background: var(--border);
    margin: 20px 0;
}

/* ─── SECTION HEADER ─── */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ─── CHIP ─── */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
}
.chip-auth { background: rgba(251,191,36,0.15); color: #fbbf24; border: 1px solid rgba(251,191,36,0.25); }

/* ─── ANIMATIONS ─── */
@keyframes spin    { to { transform: rotate(360deg); } }
@keyframes pulse   { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
@keyframes ripple  { 0% { transform: scale(0.8); opacity:0.6; } 100% { transform: scale(1.4); opacity:0; } }
@keyframes toastIn { from { opacity:0; transform: translateY(10px); } to { opacity:1; transform: translateY(0); } }
@keyframes fadeIn  { from { opacity:0; } to { opacity:1; } }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

/* ─── RESPONSIVE ─── */
@media (min-width: 481px) {
    .modal { border-radius: var(--radius); }
    .modal-overlay { align-items: center; padding: 20px; }
    .modal { transform: scale(0.9); }
    .modal-overlay.active .modal { transform: scale(1); }
}