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

/* Base Styles & Utility overrides */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Stunning Mesh Gradient Backgrounds */
.bg-mesh {
    background-color: #fce7f3;
    /* Fallback */
    background-image:
        radial-gradient(at 10% 20%, hsla(228, 100%, 94%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 10%, hsla(189, 100%, 86%, 1) 0px, transparent 50%),
        radial-gradient(at 20% 80%, hsla(355, 80%, 93%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 90%, hsla(340, 70%, 86%, 1) 0px, transparent 50%),
        radial-gradient(at 50% 50%, hsla(252, 100%, 92%, 1) 0px, transparent 50%),
        radial-gradient(at 90% 50%, hsla(242, 100%, 88%, 1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(343, 100%, 90%, 1) 0px, transparent 50%);
    background-attachment: fixed;
}

.dark .bg-mesh {
    background-color: #0f172a;
    background-image:
        radial-gradient(at 10% 20%, hsla(228, 80%, 12%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 10%, hsla(189, 80%, 10%, 1) 0px, transparent 50%),
        radial-gradient(at 20% 80%, hsla(355, 60%, 14%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 90%, hsla(340, 60%, 15%, 1) 0px, transparent 50%),
        radial-gradient(at 50% 50%, hsla(252, 70%, 14%, 1) 0px, transparent 50%),
        radial-gradient(at 90% 50%, hsla(242, 60%, 13%, 1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(343, 70%, 13%, 1) 0px, transparent 50%);
    background-attachment: fixed;
}

/* Glassmorphism Structural Classes */
.glass-panel {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 25px 50px -12px rgba(66, 68, 90, 0.1);
}

.dark .glass-panel {
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.glass-display {
    background: rgba(255, 255, 255, 0.85);
    box-shadow: inset 0 2px 5px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.9);
}

.dark .glass-display {
    background: rgba(15, 23, 42, 0.85);
    box-shadow: inset 0 2px 8px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Sidebar Tab Buttons */
.tab-btn.active-tab {
    background-color: #ffffff;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    color: #4f46e5;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.dark .tab-btn.active-tab {
    background-color: #334155;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    color: #818cf8;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.tab-btn:hover:not(.active-tab) {
    background-color: rgba(255, 255, 255, 0.4);
}

.dark .tab-btn:hover:not(.active-tab) {
    background-color: rgba(51, 65, 85, 0.4);
}

.tab-btn.active-tab span:not(.bg-transparent) {
    background-color: #6366f1;
    color: white;
}

.dark .tab-btn.active-tab span:not(.bg-transparent) {
    background-color: #4f46e5;
    color: white;
}

/* Explicit fallback for transparent active items (like dashboard) */
.tab-btn.active-tab span.bg-transparent {
    color: #6366f1;
}

.dark .tab-btn.active-tab span.bg-transparent {}


/* Calculator Keypad Buttons */
.calc-btn {
    border-radius: 1.25rem;
    padding: 1.2rem 0;
    font-size: 1.5rem;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    color: #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.calc-btn:hover,
.calc-btn:focus-visible {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -5px rgba(0, 0, 0, 0.04);
    outline: none;
}

.calc-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.05);
}

/* Dark Mode Calculator Buttons */
.dark .calc-btn {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    color: #e2e8f0;
}

.dark .calc-btn:hover,
.dark .calc-btn:focus-visible {
    background: rgba(51, 65, 85, 0.9);
    box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

/* Specific Button Styles */
.btn-operator {
    color: #6366f1;
    background: rgba(238, 242, 255, 0.7);
    border-color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.btn-operator:hover {
    background: rgba(224, 231, 255, 0.9);
}

.dark .btn-operator {
    color: #818cf8;
    background: rgba(49, 46, 129, 0.4);
    border-color: rgba(255, 255, 255, 0.05);
}

.dark .btn-operator:hover {
    background: rgba(55, 48, 163, 0.6);
}

.btn-sci {
    background: rgba(248, 250, 252, 0.6);
    color: #475569;
}

.dark .btn-sci {
    background: rgba(15, 23, 42, 0.4);
    color: #94a3b8;
}

/* Percentage and Date Inputs */
.perc-input,
.date-input {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    outline: none;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    color: #1e293b;
    font-size: 1rem;
}

.perc-input:focus,
.date-input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.dark .perc-input,
.dark .date-input {
    background: #1e293b;
    border: 1px solid #475569;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    color: #f8fafc;
}

.dark .perc-input:focus,
.dark .date-input:focus {
    border-color: #818cf8;
    box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.2);
}

/* Date Input specific fixes to map icon color */
::-webkit-calendar-picker-indicator {
    filter: opacity(0.5);
    cursor: pointer;
    transition: 0.2s;
}

::-webkit-calendar-picker-indicator:hover {
    filter: opacity(0.8);
}

.dark ::-webkit-calendar-picker-indicator {
    filter: invert(1) opacity(0.6);
}

.dark ::-webkit-calendar-picker-indicator:hover {
    filter: invert(1) opacity(0.9);
}


/* Scrollbar hiding & custom styling */
.hide-scrollbar::-webkit-scrollbar {
    display: none;
}

.hide-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 10px;
}

.dark .custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.4);
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.5);
}

/* Scientific Mode Toggle */
.sci-mode-btn.active-mode {
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.dark .sci-mode-btn.active-mode {
    color: #f8fafc;
    background: #475569;
}