/* Color palette */
:root {
    --platinum: #E0E1DD;
    --silver-lake-blue: #778DA9;
    --yinmn-blue: #415A77;
    --oxford-blue: #1B263B;
    --rich-black: #0D1B2A;
}

/* Typography */
body {
    font-family: 'SF Pro Text', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    background-color: var(--oxford-blue);
    color: var(--platinum);
    line-height: 1.45;
    margin: 0;
    padding: 0;
    font-size: 0.9rem;
}

/* Navigation */
nav {
    background-color: var(--rich-black);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-title {
    color: var(--platinum);
    font-weight: 700;
    font-size: 1.5rem;
    margin: 0;
    background: linear-gradient(to right, var(--platinum), var(--silver-lake-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Alerts */
.alert {
    max-width: 768px;
    margin: 0.8rem auto;
    border-radius: 8px;
    padding: 0.8rem 1.2rem;
    font-size: 0.85rem;
}

.alert-info {
    background-color: rgba(65, 90, 119, 0.3);
    border: 1px solid var(--yinmn-blue);
    color: var(--platinum);
}

.alert-warning {
    background-color: rgba(214, 158, 46, 0.2);
    border: 1px solid #d69e2e;
    color: var(--platinum);
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.2);
    border: 1px solid #e74c3c;
    color: var(--platinum);
}

.alert-success {
    background-color: rgba(39, 174, 96, 0.2);
    border: 1px solid #27ae60;
    color: var(--platinum);
}

/* Download Card */
.download-card {
    max-width: 768px;
    margin: 1.2rem auto 1.5rem;
    padding: 1.2rem;
    text-align: center;
}

.card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.info-message {
    background-color: rgba(65, 90, 119, 0.2);
    border-radius: 8px;
    padding: 0.7rem 1rem;
    color: var(--platinum);
    font-size: 0.85rem;
    width: 100%;
    margin-bottom: 0.5rem;
    text-align: left;
}

/* Main Content */
main {
    max-width: 768px;
    margin: 0 auto;
    padding: 0;
}

.device-info-section {
    margin: 1.2rem 0 1.5rem;
}

.app-card {
    background-color: var(--rich-black);
    border: none;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    padding: 1.2rem;
    overflow: hidden;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.card-header {
    padding: 0 0 1rem 0;
    border-bottom: 1px solid rgba(119, 141, 169, 0.2);
    margin-bottom: 1.5rem;
    background-color: transparent;
}

.card-title {
    color: var(--platinum);
    font-weight: 700;
    font-size: 1.4rem;
    margin: 0;
}

.form-label {
    color: var(--silver-lake-blue);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    background-color: var(--oxford-blue);
    border: 1px solid var(--yinmn-blue);
    color: var(--platinum);
    padding: 0.6rem;
    border-radius: 8px;
    font-size: 0.85rem;
}

/* Input group styling */
.input-group {
    display: flex;
    position: relative;
}

.input-group .form-control {
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group .btn-copy {
    flex: 0 0 auto;
    width: 50px;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.form-control:focus {
    background-color: var(--oxford-blue);
    color: var(--platinum);
    border-color: var(--silver-lake-blue);
    box-shadow: 0 0 0 0.25rem rgba(119, 141, 169, 0.25);
}

.form-control::placeholder {
    color: var(--silver-lake-blue);
    opacity: 0.7;
}

.action-buttons {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
    gap: 1rem;
}

.btn {
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.btn.primary {
    background-color: #2e3e56; /* darker than var(--yinmn-blue) */
    color: var(--platinum);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn.primary .shine {
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(120deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0.05) 100%);
    transform: skewX(-20deg);
    animation: shine 1.5s infinite;
    pointer-events: none;
}

@keyframes shine {
    0% {
        left: -75%;
    }
    100% {
        left: 125%;
    }
}

.btn.primary:hover, .btn.primary:focus {
    background-color: #22304a; /* even darker on hover */
    box-shadow: 0 0 15px 0 rgba(65,90,119,0.15);
    transform: none;
}

/* Warning state for button when in in-app browsers */
.btn.warning-state {
    background-color: #e74c3c;
    color: white;
    cursor: not-allowed;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
    font-weight: bold;
    border: 2px solid #c0392b;
}

.btn.warning-state:hover {
    background-color: #c0392b;
    box-shadow: 0 0 15px 0 rgba(231, 76, 60, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(231, 76, 60, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}

.btn.secondary {
    background-color: transparent;
    color: var(--platinum);
    border: 1px solid var(--silver-lake-blue);
}

.btn.secondary:hover, .btn.secondary:focus {
    background-color: rgba(119, 141, 169, 0.1);
    transform: translateY(-2px);
}

.btn-copy {
    background-color: var(--yinmn-blue);
    color: var(--platinum);
    border: none;
    min-width: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-copy:hover {
    background-color: var(--silver-lake-blue);
    color: var(--platinum);
}

/* Info Section */
.section-title {
    color: var(--platinum);
    font-weight: 600;
    font-size: 1.2rem;
    margin: 0;
}

.section-text {
    color: var(--silver-lake-blue);
    margin: 1rem 0 1.5rem;
    line-height: 1.7;
}

.usage-steps {
    color: var(--silver-lake-blue);
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.usage-steps li {
    margin-bottom: 0.8rem;
}

.usage-steps strong {
    color: var(--platinum);
}

/* Footer */
footer {
    padding: 2rem 0;
    margin-top: 2rem;
}

.footer {
    text-align: center;
}

.footer p {
    color: var(--silver-lake-blue);
    font-size: 1rem;
    margin: 0;
}

.footer .fa-heart {
    color: var(--silver-lake-blue);
    margin: 0 0.25rem;
    animation: heartbeat 1.2s infinite;
    transform-origin: center;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.2);
    }
    20%, 40% {
        transform: scale(0.95);
    }
    50% {
        transform: scale(1.15);
    }
    60%, 80% {
        transform: scale(1);
    }
}

/* Toast Notification */
.toast {
    background-color: var(--rich-black);
    color: var(--platinum);
    border: 1px solid var(--yinmn-blue);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.5s ease;
    margin-top: 10px;
}

.toast.showing {
    transform: translateY(0);
    opacity: 1;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.hide {
    transform: translateY(-100%);
    opacity: 0;
}

.toast-body {
    display: flex;
    align-items: center;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.6rem 1rem;
}

.toast-body .fa-check-circle {
    color: var(--silver-lake-blue);
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

/* Modern Spinner for Button */
.btn-modern-spinner {
    display: inline-block;
    width: 1.1em;
    height: 1.1em;
    border: 0.18em solid var(--platinum);
    border-top: 0.18em solid var(--silver-lake-blue);
    border-radius: 50%;
    animation: modern-spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 0.55em;
}

@keyframes modern-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Media Queries for Responsive Design */
/* Custom Scrollbar Styles */
::-webkit-scrollbar {
    width: 10px;
    background: var(--oxford-blue);
}
::-webkit-scrollbar-thumb {
    background: var(--yinmn-blue);
    border-radius: 8px;
    border: 2px solid var(--oxford-blue);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--silver-lake-blue);
}
::-webkit-scrollbar-track {
    background: var(--rich-black);
    border-radius: 8px;
}

html {
    scrollbar-color: var(--yinmn-blue) var(--rich-black);
    scrollbar-width: thin;
}

@media (max-width: 576px) {
    .nav-title {
        font-size: 1.4rem;
    }
    
    .card-title {
        font-size: 1.4rem;
    }
    
    main {
        padding: 0 1rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    /* Ensure copy buttons maintain position */
    .input-group {
        display: flex;
        flex-wrap: nowrap;
    }
    
    .input-group .form-control {
        flex: 1 1 auto;
    }
    
    .input-group .btn-copy {
        flex: 0 0 45px;
        padding-left: 0;
        padding-right: 0;
    }
    
    .btn-copy i {
        margin: 0;
    }
}

/* Highlight UDID Styling */
.highlight-udid .input-group {
    box-shadow: 0 0 0 3px rgba(224, 225, 221, 0.3);
    border-radius: 8px;
    animation: pulse 2s infinite;
}

.highlight-udid .form-control {
    font-weight: bold;
    color: var(--platinum);
    background-color: rgba(65, 90, 119, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(224, 225, 221, 0.4);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(224, 225, 221, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(224, 225, 221, 0);
    }
}