/* ===== RASHLADNI UREĐAJI - FRONTEND CSS ===== */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --ru-primary:    #0A4F6E;
    --ru-accent:     #00C2E0;
    --ru-ice:        #E8F7FC;
    --ru-white:      #FFFFFF;
    --ru-gray-50:    #F7FAFB;
    --ru-gray-100:   #EEF4F6;
    --ru-gray-200:   #D6E4EA;
    --ru-gray-400:   #8AAAB8;
    --ru-gray-600:   #4A6B7A;
    --ru-gray-800:   #1A3240;
    --ru-ok:         #059669;
    --ru-warning:    #D97706;
    --ru-expired:    #DC2626;
    --ru-shadow:     0 4px 24px rgba(10,79,110,0.10);
    --ru-radius:     14px;
    --ru-font:       'DM Sans', sans-serif;
    --ru-mono:       'JetBrains Mono', monospace;
}

.ru-app * { box-sizing: border-box; font-family: var(--ru-font); }

/* ── LOGIN ── */
.ru-login-screen {
    min-height: 100vh;
    background: linear-gradient(145deg, #0A4F6E 0%, #0E6B91 50%, #1A8BAD 100%);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
}
.ru-login-card {
    background: var(--ru-white);
    border-radius: 24px;
    padding: 48px 40px;
    width: 100%; max-width: 420px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.20);
}
.ru-logo-area { text-align: center; margin-bottom: 36px; }
.ru-snowflake-icon {
    font-size: 48px; line-height: 1;
    background: linear-gradient(135deg, #0A4F6E, #00C2E0);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    display: block; margin-bottom: 12px;
}
.ru-brand { font-size: 28px; font-weight: 700; color: var(--ru-gray-800); margin: 0; letter-spacing: -0.5px; }
.ru-brand-sub { font-size: 14px; color: var(--ru-gray-400); margin: 4px 0 0; }
.ru-login-form h2 { font-size: 18px; font-weight: 600; color: var(--ru-gray-800); margin: 0 0 6px; }
.ru-login-desc { font-size: 13px; color: var(--ru-gray-400); margin: 0 0 24px; }
.ru-field { margin-bottom: 16px; }
.ru-field label { display: block; font-size: 13px; font-weight: 500; color: var(--ru-gray-600); margin-bottom: 6px; }
.ru-field input, .ru-field textarea, .ru-field select {
    width: 100%; padding: 12px 14px;
    border: 1.5px solid var(--ru-gray-200);
    border-radius: 10px;
    font-size: 15px; color: var(--ru-gray-800);
    transition: border-color .2s, box-shadow .2s;
    background: var(--ru-white);
}
.ru-field input:focus, .ru-field textarea:focus, .ru-field select:focus {
    outline: none; border-color: var(--ru-accent);
    box-shadow: 0 0 0 3px rgba(0,194,224,0.15);
}
.ru-pass-wrap { position: relative; }
.ru-pass-wrap input { padding-right: 44px; }
.ru-pass-toggle {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; font-size: 18px; padding: 0;
}
.ru-error {
    background: #FEF2F2; border: 1px solid #FECACA; color: var(--ru-expired);
    padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 12px;
}
.ru-btn { width: 100%; padding: 14px; border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer; border: none; transition: all .2s; }
.ru-btn-primary {
    background: linear-gradient(135deg, var(--ru-primary), #1580A0);
    color: var(--ru-white);
    box-shadow: 0 4px 16px rgba(10,79,110,0.30);
}
.ru-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(10,79,110,0.40); }
.ru-btn-primary:disabled { opacity: .6; transform: none; }
.ru-spinner { display: inline-block; animation: ru-spin .6s linear infinite; }
@keyframes ru-spin { to { transform: rotate(360deg); } }

/* ── HEADER ── */
.ru-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px;
    background: var(--ru-primary);
    color: var(--ru-white);
    position: sticky; top: 0; z-index: 100;
}
.ru-header-left { display: flex; align-items: center; gap: 12px; }
.ru-snowflake-sm { font-size: 24px; }
.ru-header-brand { font-weight: 700; font-size: 15px; }
.ru-header-welcome { font-size: 12px; opacity: .75; }
.ru-logout-btn {
    background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25);
    color: white; padding: 8px 16px; border-radius: 8px; font-size: 13px; cursor: pointer;
    transition: background .2s;
}
.ru-logout-btn:hover { background: rgba(255,255,255,0.25); }

/* ── SCREENS ── */
#ru-user-screen { background: var(--ru-gray-50); min-height: 100vh; }
.ru-section-title { font-size: 16px; font-weight: 600; color: var(--ru-gray-800); padding: 20px 20px 10px; }

/* Devices grid */
.ru-devices-grid { padding: 0 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.ru-device-card {
    background: var(--ru-white); border-radius: 14px; padding: 16px 20px;
    display: flex; align-items: center; gap: 14px; cursor: pointer;
    box-shadow: var(--ru-shadow); transition: transform .2s, box-shadow .2s;
    border: 1.5px solid transparent;
}
.ru-device-card:hover { transform: translateX(4px); border-color: var(--ru-accent); }
.ru-device-icon { font-size: 28px; }
.ru-device-card-body { flex: 1; }
.ru-device-name { font-weight: 600; color: var(--ru-gray-800); font-size: 15px; }
.ru-device-model { font-size: 13px; color: var(--ru-gray-400); margin-top: 2px; }
.ru-device-arrow { font-size: 24px; color: var(--ru-gray-200); }

/* Back button */
.ru-back-btn {
    margin: 16px 16px 0;
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--ru-white); border: 1.5px solid var(--ru-gray-200);
    color: var(--ru-gray-600); padding: 8px 16px; border-radius: 8px;
    font-size: 13px; font-weight: 500; cursor: pointer; transition: all .2s;
}
.ru-back-btn:hover { border-color: var(--ru-accent); color: var(--ru-primary); }

/* Device hero */
.ru-device-hero {
    background: linear-gradient(135deg, var(--ru-primary) 0%, #1580A0 100%);
    margin: 0; padding: 28px 20px 24px;
    display: flex; align-items: center; gap: 18px; color: white;
}
.ru-device-hero-icon { font-size: 48px; }
.ru-device-title { font-size: 22px; font-weight: 700; margin: 0 0 4px; }
.ru-device-model-tag { font-size: 13px; opacity: .8; margin-bottom: 10px; }

/* Cards grid */
.ru-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px; padding: 16px;
}
@media (max-width: 640px) { .ru-cards-grid { grid-template-columns: 1fr; } }

.ru-info-card {
    background: var(--ru-white); border-radius: 14px;
    box-shadow: var(--ru-shadow); overflow: hidden;
}
.ru-card-header {
    padding: 12px 16px; font-weight: 600; font-size: 14px;
    color: var(--ru-gray-600); border-bottom: 1px solid var(--ru-gray-100);
    background: var(--ru-gray-50);
}
.ru-card-body { padding: 14px 16px; }
.ru-info-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 0; border-bottom: 1px solid var(--ru-gray-100);
    font-size: 14px;
}
.ru-info-row:last-child { border-bottom: none; }
.ru-info-row span { color: var(--ru-gray-400); font-size: 13px; }
.ru-info-row strong { color: var(--ru-gray-800); font-weight: 500; text-align: right; max-width: 60%; }
.ru-info-desc { font-size: 13px; color: var(--ru-gray-600); padding-top: 8px; line-height: 1.6; }
.ru-mono { font-family: var(--ru-mono) !important; font-size: 12px !important; }

/* Status badges */
.ru-status-badge {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
}
.ru-status-aktivan { background: #D1FAE5; color: #065F46; }
.ru-status-neaktivan { background: var(--ru-gray-100); color: var(--ru-gray-600); }
.ru-status-servis { background: #FEF3C7; color: #92400E; }

/* OK/Warning/Expired */
.ru-ok strong, .ru-ok { color: var(--ru-ok) !important; }
.ru-warning strong, .ru-warning { color: var(--ru-warning) !important; }
.ru-expired strong, .ru-expired { color: var(--ru-expired) !important; }

/* Next service big */
.ru-next-servis-date { font-size: 26px; font-weight: 700; color: var(--ru-gray-800); padding: 8px 0 4px; }
.ru-servis-countdown { font-size: 13px; font-weight: 500; }

/* PDF */
.ru-pdf-section {
    margin: 0 16px 12px; background: var(--ru-white);
    border-radius: 14px; box-shadow: var(--ru-shadow); overflow: hidden;
}
.ru-pdf-btn {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 20px; font-size: 15px; font-weight: 600;
    color: var(--ru-primary); text-decoration: none;
    transition: background .2s;
}
.ru-pdf-btn:hover { background: var(--ru-ice); color: var(--ru-primary); }

/* Servis timeline */
.ru-servis-section { padding: 0 16px 20px; }
.ru-servis-timeline { display: flex; flex-direction: column; gap: 8px; }
.ru-servis-item {
    display: flex; gap: 14px;
    background: var(--ru-white); border-radius: 12px; padding: 14px 16px;
    box-shadow: var(--ru-shadow);
}
.ru-servis-date {
    font-family: var(--ru-mono); font-size: 12px; color: var(--ru-accent);
    font-weight: 500; white-space: nowrap; padding-top: 2px; min-width: 80px;
}
.ru-servis-opis { font-size: 14px; font-weight: 500; color: var(--ru-gray-800); }
.ru-servis-meta { font-size: 12px; color: var(--ru-gray-400); margin-top: 4px; }
.ru-empty-servis { font-size: 13px; color: var(--ru-gray-400); padding: 12px 0; text-align: center; }

/* Napomena */
.ru-napomena-section {
    margin: 0 16px 24px; padding: 14px 16px;
    background: #FFFBEB; border-radius: 12px; border-left: 3px solid var(--ru-warning);
    font-size: 14px; color: var(--ru-gray-600);
}
.ru-link { color: var(--ru-accent); text-decoration: none; }
.ru-link:hover { text-decoration: underline; }
.ru-empty { color: var(--ru-gray-400); font-size: 13px; text-align: center; padding: 20px; }